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Climate and Average Weather Year Round in Mount Pleasant South Carolina, United States

In Mount Pleasant, the summers are hot and oppressive, the winters are cold and windy, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 43°F to 88°F and is rarely below 30°F or above 93°F.

Based on the tourism score, the best times of year to visit Mount Pleasant for warm-weather activities are from mid April to late May and from late September to late October.

Climate in Mount Pleasant

coolcomfortablewarmhotwarmcomfortablecoolJanFebMarAprMayJunJulAugSepOctNovDecNowNow66%66%43%43%clearovercastprecipitation: 5.2 inprecipitation: 5.2 in2.3 in2.3 inmuggy: 99%muggy: 99%2%2%drydrytourism score: 6.9tourism score: 6.92.42.4
Mount Pleasant weather by month. Click on each chart for more information.

The hot season lasts for 3.7 months, from May 27 to September 16, with an average daily high temperature above 83°F. The hottest month of the year in Mount Pleasant is July, with an average high of 88°F and low of 76°F.

The cool season lasts for 3.0 months, from December 1 to March 1, with an average daily high temperature below 65°F. The coldest month of the year in Mount Pleasant is January, with an average low of 43°F and high of 59°F.

Average High and Low Temperature in Mount Pleasant

Average High and Low Temperature in Mount PleasanthotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1759°FJan 1759°FJul 2288°FJul 2288°F43°F43°F77°F77°FMay 2783°FMay 2783°FSep 1683°FSep 1683°FDec 165°FDec 165°FMar 165°FMar 165°F69°F69°F71°F71°F49°F49°F48°F48°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 59°F62°F68°F74°F80°F86°F88°F87°F83°F75°F68°F62°F
Temp. 50°F53°F59°F65°F73°F79°F82°F81°F77°F68°F60°F53°F
Low 43°F45°F51°F58°F66°F73°F76°F75°F71°F61°F52°F46°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in Mount Pleasant

Average Hourly Temperature in Mount PleasantJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowcoldcoldcoldcoldcoolcoolwarmhotcomfortablecomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Uzunbağ, Turkey (6,134 miles away) and Kuai’an, China (8,188 miles) are the far-away foreign places with temperatures most similar to Mount Pleasant (view comparison).

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Compare Mount Pleasant to another city:

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In Mount Pleasant, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Mount Pleasant begins around September 11 and lasts for 3.1 months, ending around December 14.

The clearest month of the year in Mount Pleasant is October, during which on average the sky is clear, mostly clear, or partly cloudy 64% of the time.

The cloudier part of the year begins around December 14 and lasts for 8.9 months, ending around September 11.

The cloudiest month of the year in Mount Pleasant is July, during which on average the sky is overcast or mostly cloudy 56% of the time.

Cloud Cover Categories in Mount Pleasant

Cloud Cover Categories in Mount PleasantclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 2666%Oct 2666%Jul 2643%Jul 2643%Sep 1154%Sep 1154%Dec 1454%Dec 1454%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 47%47%44%39%42%50%56%51%44%36%40%46%
Clearer 53%53%56%61%58%50%44%49%56%64%60%54%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Mount Pleasant varies significantly throughout the year.

The wetter season lasts 3.4 months, from June 4 to September 16, with a greater than 35% chance of a given day being a wet day. The month with the most wet days in Mount Pleasant is August, with an average of 14.9 days with at least 0.04 inches of precipitation.

The drier season lasts 8.6 months, from September 16 to June 4. The month with the fewest wet days in Mount Pleasant is November, with an average of 6.1 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Mount Pleasant is August, with an average of 14.9 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 52% on August 4.

Daily Chance of Precipitation in Mount Pleasant

Daily Chance of Precipitation in Mount PleasantwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 452%Aug 452%Oct 2919%Oct 2919%Jun 435%Jun 435%Sep 1635%Sep 1635%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 8.3d8.2d8.6d8.0d8.9d12.1d14.9d14.9d10.7d7.3d6.1d7.4d
Mixed 0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d
Any 8.4d8.2d8.6d8.0d8.9d12.1d14.9d14.9d10.7d7.3d6.1d7.4d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Mount Pleasant experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Mount Pleasant. The month with the most rain in Mount Pleasant is August, with an average rainfall of 5.1 inches.

The month with the least rain in Mount Pleasant is November, with an average rainfall of 2.3 inches.

Average Monthly Rainfall in Mount Pleasant

Average Monthly Rainfall in Mount PleasantJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inAug 205.2 inAug 205.2 inNov 112.3 inNov 112.3 inFeb 123.3 inFeb 123.3 inMay 52.5 inMay 52.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 3.1″3.3″3.2″2.7″2.6″3.9″4.3″5.1″4.7″3.4″2.3″2.7″

The length of the day in Mount Pleasant varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 59 minutes of daylight; the longest day is June 20, with 14 hours, 19 minutes of daylight.

Hours of Daylight and Twilight in Mount Pleasant

Hours of Daylight and Twilight in Mount PleasantJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 19 minJun 2014 hr, 19 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 59 minDec 219 hr, 59 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 10.3h11.0h12.0h13.0h13.9h14.3h14.1h13.3h12.3h11.3h10.5h10.0h

The earliest sunrise is at 6:10 AM on June 11, and the latest sunrise is 1 hour, 28 minutes later at 7:38 AM on November 2. The earliest sunset is at 5:12 PM on December 3, and the latest sunset is 3 hours, 19 minutes later at 8:31 PM on June 29.

Daylight saving time (DST) is observed in Mount Pleasant during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

Sunrise & Sunset with Twilight and Daylight Saving Time in Mount Pleasant

Sunrise & Sunset with Twilight and Daylight Saving Time in Mount PleasantJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 116:10 AMJun 116:10 AM8:31 PMJun 298:31 PMJun 29Dec 35:12 PMDec 35:12 PM7:38 AMNov 27:38 AMNov 2Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Mount Pleasant

Solar Elevation and Azimuth in Mount PleasantJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM0001010101020202030303040404050506060708000010101020202020303030404040505060707034NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Mount Pleasant

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Mount Pleasant experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.0 months, from April 26 to October 25, during which time the comfort level is muggy, oppressive, or miserable at least 26% of the time. The month with the most muggy days in Mount Pleasant is July, with 30.3 days that are muggy or worse.

The month with the fewest muggy days in Mount Pleasant is February, with 0.6 days that are muggy or worse.

Humidity Comfort Levels in Mount Pleasant

Humidity Comfort Levels in Mount PleasantmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 312%Jan 312%99%Jul 2099%Jul 20Apr 2626%Apr 2626%Oct 2526%Oct 2526%NowNowmiserablemiserableoppressiveoppressivedrydryhumidhumidmuggymuggycomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.8d0.6d1.6d5.3d16.1d26.1d30.3d29.9d22.9d11.1d4.5d1.9d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Mount Pleasant experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.5 months, from October 18 to May 1, with average wind speeds of more than 9.4 miles per hour. The windiest month of the year in Mount Pleasant is February, with an average hourly wind speed of 10.8 miles per hour.

The calmer time of year lasts for 5.5 months, from May 1 to October 18. The calmest month of the year in Mount Pleasant is August, with an average hourly wind speed of 8.0 miles per hour.

Average Wind Speed in Mount Pleasant

Average Wind Speed in Mount PleasantwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphJan 3010.9 mphJan 3010.9 mphAug 177.8 mphAug 177.8 mphOct 189.4 mphOct 189.4 mphMay 19.4 mphMay 19.4 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 10.710.810.69.99.18.68.48.08.79.39.810.2

The predominant average hourly wind direction in Mount Pleasant varies throughout the year.

The wind is most often from the west for 2.3 months, from January 7 to March 17, with a peak percentage of 36% on January 20. The wind is most often from the south for 5.3 months, from March 17 to August 25, with a peak percentage of 52% on July 18. The wind is most often from the north for 3.1 months, from October 5 to January 7, with a peak percentage of 36% on January 1.

Wind Direction in Mount Pleasant

Wind Direction in Mount PleasantWSENJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Mount Pleasant is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.4 months, from June 14 to September 27, with an average temperature above 79°F. The month of the year in Mount Pleasant with the warmest water is August, with an average temperature of 83°F.

The time of year with cooler water lasts for 4.0 months, from December 19 to April 20, with an average temperature below 67°F. The month of the year in Mount Pleasant with the coolest water is March, with an average temperature of 64°F.

Average Water Temperature in Mount Pleasant

Average Water Temperature in Mount PleasantwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FAug 483°FAug 483°F64°FMar 264°FMar 2Jun 1479°FJun 1479°FSep 2779°FSep 2779°FDec 1967°FDec 1967°FApr 2067°FApr 2067°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 65°F64°F64°F67°F73°F79°F82°F83°F80°F75°F70°F68°F

To characterize how pleasant the weather is in Mount Pleasant throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Mount Pleasant for general outdoor tourist activities are from mid April to late May and from late September to late October, with a peak score in the first week of May.

Tourism Score in Mount Pleasant

Tourism Score in Mount Pleasantbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.96.92.42.46.66.63.63.6NowNow cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Mount Pleasant for hot-weather activities are from mid May to early July and from mid August to late September, with a peak score in the first week of September.

Beach/Pool Score in Mount Pleasant

Beach/Pool Score in Mount Pleasantbest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.16.10.40.46.16.15.15.1NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Mount Pleasant typically lasts for 10 months (311 days), from around February 13 to around December 20, rarely starting before January 19 or after March 9, and rarely ending before November 27 or after January 10.

Time Spent in Various Temperature Bands and the Growing Season in Mount Pleasant

Time Spent in Various Temperature Bands and the Growing Season in Mount Pleasantgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 1350%Feb 1350%Dec 2050%Dec 2090%Mar 990%Mar 990%Nov 2790%Nov 2710%Jan 1910%Jan 19Jul 18100%Jul 18100%NowNowvery coldcoldcoolwarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Mount Pleasant should appear around January 21, only rarely appearing before January 13 or after February 5.

Growing Degree Days in Mount Pleasant

Growing Degree Days in Mount PleasantJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°FJan 2190°FJan 2190°FApr 20900°FApr 20900°FJun 11,800°FJun 11,800°FDec 316,422°FDec 316,422°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 2.8 months, from April 6 to June 30, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year in Mount Pleasant is May, with an average of 6.6 kWh.

The darker period of the year lasts for 2.9 months, from November 10 to February 6, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year in Mount Pleasant is December, with an average of 2.8 kWh.

Average Daily Incident Shortwave Solar Energy in Mount Pleasant

Average Daily Incident Shortwave Solar Energy in Mount PleasantbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 136.7 kWhMay 136.7 kWhDec 202.8 kWhDec 202.8 kWhApr 65.9 kWhApr 65.9 kWhJun 305.9 kWhJun 305.9 kWhFeb 63.5 kWhFeb 63.5 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 3.03.95.16.26.66.25.65.45.04.43.42.8

For the purposes of this report, the geographical coordinates of Mount Pleasant are 32.794 deg latitude, -79.863 deg longitude, and 10 ft elevation.

The topography within 2 miles of Mount Pleasant is essentially flat, with a maximum elevation change of 26 feet and an average elevation above sea level of 5 feet. Within 10 miles is also essentially flat (59 feet). Within 50 miles is essentially flat (509 feet).

The area within 2 miles of Mount Pleasant is covered by artificial surfaces (54%), herbaceous vegetation (25%), and water (20%), within 10 miles by water (44%) and artificial surfaces (28%), and within 50 miles by water (52%) and trees (26%).

This report illustrates the typical weather in Mount Pleasant, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Mount Pleasant.

For each station, the records are corrected for the elevation difference between that station and Mount Pleasant according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Mount Pleasant is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mount Pleasant and a given station.

The stations contributing to this reconstruction are:

Sources mapKCLX, 52%6 mi, -3 ftKLRO, 27%9 mi, 0 ftKJZI, 21%10 mi, 7 ft© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of Mount Pleasant and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.