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Climate and Average Weather Year Round in Wrentham United Kingdom

In Wrentham, the summers are short and comfortable, the winters are long and very cold, and it is windy and partly cloudy year round. Over the course of the year, the temperature typically varies from 37°F to 69°F and is rarely below 31°F or above 76°F.

Based on the tourism score, the best time of year to visit Wrentham for warm-weather activities is from late June to early September.

Climate in Wrentham

coldcoldcoolcomfortablecoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow57%57%32%32%overcastclearprecipitation: 2.2 inprecipitation: 2.2 in1.2 in1.2 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 6.9tourism score: 6.90.10.1
Wrentham weather by month. Click on each chart for more information.

The warm season lasts for 2.9 months, from June 21 to September 17, with an average daily high temperature above 64°F. The hottest month of the year in Wrentham is August, with an average high of 68°F and low of 58°F.

The cool season lasts for 4.0 months, from November 24 to March 26, with an average daily high temperature below 49°F. The coldest month of the year in Wrentham is February, with an average low of 38°F and high of 45°F.

Average High and Low Temperature in Wrentham

Average High and Low Temperature in WrenthamwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 1745°FFeb 1745°FAug 669°FAug 669°F37°F37°F58°F58°FJun 2164°FJun 2164°FSep 1764°FSep 1764°FNov 2449°FNov 2449°FMar 2649°FMar 2649°F54°F54°F55°F55°F42°F42°F41°F41°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 45°F45°F48°F53°F58°F63°F68°F68°F64°F58°F51°F47°F
Temp. 42°F41°F44°F47°F53°F58°F63°F63°F60°F54°F48°F43°F
Low 38°F38°F40°F43°F48°F53°F57°F58°F55°F50°F44°F40°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 Wrentham

Average Hourly Temperature in WrenthamJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowvery coldvery coldcoldcoldcoolcomfortable
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.

Parksville, Canada (4,736 miles away) is the far-away foreign place with temperatures most similar to Wrentham (view comparison).

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© OpenStreetMap contributors

Compare Wrentham to another city:

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In Wrentham, 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 Wrentham begins around April 3 and lasts for 6.4 months, ending around October 15.

The clearest month of the year in Wrentham is July, during which on average the sky is clear, mostly clear, or partly cloudy 56% of the time.

The cloudier part of the year begins around October 15 and lasts for 5.6 months, ending around April 3.

The cloudiest month of the year in Wrentham is January, during which on average the sky is overcast or mostly cloudy 67% of the time.

Cloud Cover Categories in Wrentham

Cloud Cover Categories in WrenthamclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2057%Jul 2057%Jan 632%Jan 632%Apr 345%Apr 345%Oct 1545%Oct 1545%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 67%64%61%54%51%49%44%47%51%56%62%65%
Clearer 33%36%39%46%49%51%56%53%49%44%38%35%

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

The wetter season lasts 4.5 months, from September 20 to February 4, with a greater than 26% chance of a given day being a wet day. The month with the most wet days in Wrentham is November, with an average of 9.3 days with at least 0.04 inches of precipitation.

The drier season lasts 7.5 months, from February 4 to September 20. The month with the fewest wet days in Wrentham is April, with an average of 6.4 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 Wrentham is November, with an average of 9.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 32% on November 22.

Daily Chance of Precipitation in Wrentham

Daily Chance of Precipitation in WrenthamwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 2232%Nov 2232%Apr 2719%Apr 2719%Sep 2026%Sep 2026%Feb 426%Feb 426%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 9.1d7.0d7.4d6.4d6.8d7.1d6.9d7.3d7.5d9.4d9.3d9.3d
Mixed 0.1d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d
Any 9.3d7.1d7.5d6.4d6.8d7.1d6.9d7.3d7.5d9.4d9.3d9.4d

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. Wrentham experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Wrentham. The month with the most rain in Wrentham is October, with an average rainfall of 2.1 inches.

The month with the least rain in Wrentham is April, with an average rainfall of 1.2 inches.

Average Monthly Rainfall in Wrentham

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 1.8″1.4″1.3″1.2″1.4″1.6″1.5″1.6″1.8″2.1″2.0″2.0″

The length of the day in Wrentham varies extremely over the course of the year. In 2024, the shortest day is December 21, with 7 hours, 41 minutes of daylight; the longest day is June 20, with 16 hours, 49 minutes of daylight.

Hours of Daylight and Twilight in Wrentham

Hours of Daylight and Twilight in WrenthamJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2016 hr, 49 minJun 2016 hr, 49 minJun 2012 hr, 11 minSep 2212 hr, 11 minSep 227 hr, 41 minDec 217 hr, 41 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 8.3h9.9h11.9h14.0h15.8h16.7h16.2h14.6h12.6h10.6h8.8h7.8h

The earliest sunrise is at 4:30 AM on June 17, and the latest sunrise is 3 hours, 33 minutes later at 8:03 AM on December 30. The earliest sunset is at 3:39 PM on December 12, and the latest sunset is 5 hours, 40 minutes later at 9:19 PM on June 24.

Daylight saving time (DST) is observed in Wrentham during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time in Wrentham

Sunrise & Sunset with Twilight and Daylight Saving Time in WrenthamJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 174:30 AMJun 174:30 AM9:19 PMJun 249:19 PMJun 24Dec 123:39 PMDec 123:39 PM8:03 AMDec 308:03 AMDec 30Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Wrentham

Solar Elevation and Azimuth in WrenthamJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00001010102020303040405000010101010202030304040506014NowNow
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 Wrentham

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.

The perceived humidity level in Wrentham, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels in Wrentham

Humidity Comfort Levels in WrenthamJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 200%Mar 200%Aug 101%Aug 101%NowNowcomfortablecomfortabledrydryhumidhumid
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 0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.2d0.0d0.0d0.0d0.0d

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 Wrentham experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.6 months, from October 2 to March 22, with average wind speeds of more than 14.1 miles per hour. The windiest month of the year in Wrentham is January, with an average hourly wind speed of 16.9 miles per hour.

The calmer time of year lasts for 6.4 months, from March 22 to October 2. The calmest month of the year in Wrentham is July, with an average hourly wind speed of 11.0 miles per hour.

Average Wind Speed in Wrentham

Average Wind Speed in WrenthamwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mphJan 217.3 mphJan 217.3 mphJul 2710.9 mphJul 2710.9 mphOct 214.1 mphOct 214.1 mphMar 2214.1 mphMar 2214.1 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) 16.915.714.312.712.011.111.011.713.415.115.916.6

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

The wind is most often from the south for 1.3 weeks, from April 6 to April 15; for 6.0 days, from May 1 to May 7; for 3.1 weeks, from May 18 to June 9; and for 1.1 weeks, from October 6 to October 14, with a peak percentage of 34% on October 13. The wind is most often from the north for 2.3 weeks, from April 15 to May 1 and for 1.6 weeks, from May 7 to May 18, with a peak percentage of 29% on April 25. The wind is most often from the west for 3.9 months, from June 9 to October 6 and for 5.7 months, from October 14 to April 6, with a peak percentage of 38% on August 25.

Wind Direction in Wrentham

Wind Direction in WrenthamWNNSWWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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).

Wrentham 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 significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.0 months, from July 5 to October 6, with an average temperature above 59°F. The month of the year in Wrentham with the warmest water is August, with an average temperature of 63°F.

The time of year with cooler water lasts for 3.9 months, from December 22 to April 19, with an average temperature below 46°F. The month of the year in Wrentham with the coolest water is February, with an average temperature of 42°F.

Average Water Temperature in Wrentham

Average Water Temperature in WrenthamwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°FAug 2063°FAug 2063°F42°FFeb 2442°FFeb 24Jul 559°FJul 559°FOct 659°FOct 659°FDec 2246°FDec 2246°FApr 1946°FApr 1946°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 44°F42°F43°F46°F51°F56°F61°F63°F62°F57°F52°F47°F

To characterize how pleasant the weather is in Wrentham 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 time of year to visit Wrentham for general outdoor tourist activities is from late June to early September, with a peak score in the last week of July.

Tourism Score in Wrentham

Tourism Score in Wrenthambest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.96.90.10.1NowNowtemperaturetemperature 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 time of year to visit Wrentham for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

Beach/Pool Score in Wrentham

Beach/Pool Score in WrenthamJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.42.40.00.0NowNowtemperaturetemperaturecloudscloudsprecipitationprecipitation
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 Wrentham typically lasts for 9.8 months (298 days), from around February 23 to around December 17, rarely starting after March 28, or ending before November 18.

Time Spent in Various Temperature Bands and the Growing Season in Wrentham

Time Spent in Various Temperature Bands and the Growing Season in Wrenthamgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 2350%Feb 2350%Dec 1750%Dec 1790%Mar 2890%Mar 2890%Nov 1890%Nov 1814%Jan 1514%Jan 15Jul 20100%Jul 20100%NowNowvery coldcoldcoolcomfortablefreezing
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 Wrentham should appear around May 10, only rarely appearing before April 24 or after May 28.

Growing Degree Days in Wrentham

Growing Degree Days in WrenthamJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°FMay 1090°FMay 1090°FAug 5900°FAug 5900°FDec 311,747°FDec 311,747°F
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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.6 months, from April 29 to August 15, with an average daily incident shortwave energy per square meter above 5.2 kWh. The brightest month of the year in Wrentham is June, with an average of 6.3 kWh.

The darker period of the year lasts for 3.9 months, from October 24 to February 21, with an average daily incident shortwave energy per square meter below 1.7 kWh. The darkest month of the year in Wrentham is December, with an average of 0.6 kWh.

Average Daily Incident Shortwave Solar Energy in Wrentham

Average Daily Incident Shortwave Solar Energy in WrenthambrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 266.4 kWhJun 266.4 kWhDec 240.6 kWhDec 240.6 kWhApr 295.2 kWhApr 295.2 kWhAug 155.2 kWhAug 155.2 kWhOct 241.7 kWhOct 241.7 kWhFeb 211.7 kWhFeb 211.7 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) 0.81.62.94.55.86.36.15.23.72.11.00.6

For the purposes of this report, the geographical coordinates of Wrentham are 52.384 deg latitude, 1.667 deg longitude, and 36 ft elevation.

The topography within 2 miles of Wrentham contains only modest variations in elevation, with a maximum elevation change of 108 feet and an average elevation above sea level of 41 feet. Within 10 miles also contains only modest variations in elevation (184 feet). Within 50 miles contains only modest variations in elevation (531 feet).

The area within 2 miles of Wrentham is covered by cropland (81%), within 10 miles by water (41%) and cropland (37%), and within 50 miles by water (60%) and cropland (29%).

This report illustrates the typical weather in Wrentham, 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 6 weather stations near enough to contribute to our estimation of the temperature and dew point in Wrentham.

For each station, the records are corrected for the elevation difference between that station and Wrentham 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 Wrentham is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Wrentham and a given station.

The stations contributing to this reconstruction are:

  • Bentwaters Royal Air Force Base (EGVJ, 45%, 20 mi, southwest, 49 ft elevation change)
  • Norwich International Airport (EGSH, 30%, 26 mi, northwest, 79 ft elevation change)
  • P11-B / de Ruyter (EHPG, 7%, 71 mi, east, 43 ft elevation change)
  • Euro Platform (EHSA, 6%, 73 mi, east, 23 ft elevation change)
  • Euro Platform (EHEP, 6%, 73 mi, east, 23 ft elevation change)
  • K13-A (EHJR, 5.0%, 87 mi, northeast, 62 ft elevation change)

Sources mapEGVJ, 45%20 mi, 49 ftEGSH, 30%26 mi, 79 ftEHPG, 7%71 mi, 43 ftEHSA, 6%73 mi, 23 ftEHEP, 6%73 mi, 23 ftEHJR, 5%87 mi, 62 ft© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of Wrentham 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.