1. WeatherSpark.com
  2. United States
  3. South Carolina

Average Weather at Anderson County Airport South Carolina, United States

At Anderson County Airport, the summers are hot and muggy, the winters are cold and wet, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 34°F to 90°F and is rarely below 21°F or above 97°F.

Based on the tourism score, the best times of year to visit Anderson County Airport for warm-weather activities are from early May to early June and from late August to mid October.

Climate Summary

coldcoolwarmhotwarmcoolJanFebMarAprMayJunJulAugSepOctNovDecNowNow67%67%49%49%clearovercastprecipitation: 4.5 inprecipitation: 4.5 in3.1 in3.1 inmuggy: 83%muggy: 83%0%0%drydrytourism score: 6.5tourism score: 6.51.01.0
Click on each chart for more information.

Temperature

The hot season lasts for 3.7 months, from May 24 to September 14, with an average daily high temperature above 82°F. The hottest day of the year is July 21, with an average high of 90°F and low of 71°F.

The cool season lasts for 3.0 months, from November 26 to February 27, with an average daily high temperature below 60°F. The coldest day of the year is January 18, with an average low of 34°F and high of 53°F.

Average High and Low Temperature

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.

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

Average Hourly Temperature at Anderson County AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMNowNowvery coldvery coldcoldcoldcoolcoolcomfortablewarmhotvery coldwarmvery cold
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.

Bir el Ater, Algeria (4,961 miles away); Kafr Takhārīm, Syria (6,191 miles); and Baiyun, China (8,030 miles) are the far-away foreign places with temperatures most similar to Anderson County Airport (view comparison).

Clouds

At Anderson County Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year at Anderson County Airport begins around July 30 and lasts for 3.8 months, ending around November 22. On October 7, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.

The cloudier part of the year begins around November 22 and lasts for 8.2 months, ending around July 30. On January 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 51% of the time, and clear, mostly clear, or partly cloudy 49% of the time.

Cloud Cover Categories

Cloud Cover Categories at Anderson County AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 767%Oct 767%Jan 449%Jan 449%Jul 3057%Jul 3057%Nov 2258%Nov 2258%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.

Precipitation

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

The wetter season lasts 3.4 months, from May 16 to August 28, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 44% on July 25.

The drier season lasts 8.6 months, from August 28 to May 16. The smallest chance of a wet day is 21% on October 28.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 44% on July 25.

Daily Chance of Precipitation

Daily Chance of Precipitation at Anderson County AirportwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 2544%Jul 2544%Oct 2821%Oct 2821%May 1633%May 1633%Aug 2833%Aug 2833%NowNowrainmixed
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).

Rainfall

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. Anderson County Airport experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Anderson County Airport. The most rain falls during the 31 days centered around March 1, with an average total accumulation of 4.4 inches.

The least rain falls around October 28, with an average total accumulation of 3.1 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall at Anderson County Airport does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at Anderson County AirportsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 inJan 210.2 inJan 210.2 inJul 200.0 inJul 200.0 inDec 140.1 inDec 140.1 inFeb 290.1 inFeb 290.1 inNowNow
The average liquid-equivalent snowfall (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 rainfall.

Sun

The length of the day at Anderson County Airport varies significantly over the course of the year. In 2020, the shortest day is December 21, with 9 hours, 51 minutes of daylight; the longest day is June 20, with 14 hours, 28 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Anderson County AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 28 minJun 2014 hr, 28 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 229 hr, 51 minDec 219 hr, 51 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.

The earliest sunrise is at 6:17 AM on June 12, and the latest sunrise is 1 hour, 33 minutes later at 7:50 AM on October 31. The earliest sunset is at 5:20 PM on December 4, and the latest sunset is 3 hours, 27 minutes later at 8:47 PM on June 28.

Daylight saving time (DST) is observed at Anderson County Airport during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at Anderson County AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 126:17 AMJun 126:17 AM8:47 PMJun 288:47 PMJun 28Dec 45:20 PMDec 45:20 PM7:50 AMOct 317:50 AMOct 31Mar 8DSTMar 8DSTDSTNov 1DSTNov 1daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2020. 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.

Humidity

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.

Anderson County Airport experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.3 months, from May 19 to September 29, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The muggiest day of the year is July 24, with muggy conditions 83% of the time.

The least muggy day of the year is February 2, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels at Anderson County AirportmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 20%Feb 20%83%Jul 2483%Jul 24May 1921%May 1921%Sep 2921%Sep 2921%NowNowoppressiveoppressivemuggymuggyhumidhumiddrydrycomfortablecomfortable
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.

Wind

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 at Anderson County Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.3 months, from October 4 to May 14, with average wind speeds of more than 4.4 miles per hour. The windiest day of the year is March 7, with an average hourly wind speed of 5.3 miles per hour.

The calmer time of year lasts for 4.7 months, from May 14 to October 4. The calmest day of the year is July 31, with an average hourly wind speed of 3.4 miles per hour.

Average Wind Speed

Average Wind Speed at Anderson County AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mphMar 75.3 mphMar 75.3 mphJul 313.4 mphJul 313.4 mphOct 44.4 mphOct 44.4 mphMay 144.4 mphMay 144.4 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Anderson County Airport varies throughout the year.

The wind is most often from the east for 2.3 months, from August 7 to October 16, with a peak percentage of 40% on September 6. The wind is most often from the north for 4.3 weeks, from October 16 to November 15, with a peak percentage of 30% on October 16. The wind is most often from the west for 8.7 months, from November 15 to August 7, with a peak percentage of 38% on January 1.

Wind Direction

Wind Direction at Anderson County AirportWENWJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Best Time of Year to Visit

To characterize how pleasant the weather is at Anderson County Airport 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 Anderson County Airport for general outdoor tourist activities are from early May to early June and from late August to mid October, with a peak score in the third week of September.

Tourism Score

Tourism Score at Anderson County Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.56.51.01.06.16.15.05.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 Anderson County Airport for hot-weather activities is from mid June to mid September, with a peak score in the second week of August.

Beach/Pool Score

Beach/Pool Score at Anderson County Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.26.20.10.1NowNow precipitationprecipitationcloudscloudstemperaturetemperaturebeach/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.

Growing Season

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 at Anderson County Airport typically lasts for 7.7 months (234 days), from around March 21 to around November 11, rarely starting before March 2 or after April 11, and rarely ending before October 22 or after November 30.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Anderson County Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 2150%Mar 2150%Nov 1150%Nov 1190%Apr 1190%Apr 1190%Oct 2290%Oct 2210%Mar 210%Mar 210%Nov 3010%Nov 300%Jan 240%Jan 24Jul 16100%Jul 16100%NowNowvery coldcoldcoolcomfortablewarmhot
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 at Anderson County Airport should appear around February 17, only rarely appearing before January 29 or after March 2.

Growing Degree Days

Growing Degree Days at Anderson County AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F1,000°F2,000°F3,000°F4,000°F5,000°FFeb 1787°FFeb 1787°FMay 12900°FMay 12900°FJun 201,800°FJun 201,800°FDec 315,072°FDec 315,072°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 4.4 months, from April 12 to August 25, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is June 14, with an average of 6.8 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 3.4 kWh. The darkest day of the year is December 24, with an average of 2.5 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Anderson County AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJun 146.8 kWhJun 146.8 kWhDec 242.5 kWhDec 242.5 kWhApr 126.0 kWhApr 126.0 kWhAug 256.0 kWhAug 256.0 kWhFeb 63.4 kWhFeb 63.4 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.

Topography

For the purposes of this report, the geographical coordinates of Anderson County Airport are 34.495 deg latitude, -82.709 deg longitude, and 751 ft elevation.

The topography within 2 miles of Anderson County Airport contains only modest variations in elevation, with a maximum elevation change of 194 feet and an average elevation above sea level of 738 feet. Within 10 miles also contains only modest variations in elevation (394 feet). Within 50 miles contains only modest variations in elevation (4,554 feet).

The area within 2 miles of Anderson County Airport is covered by cropland (51%) and artificial surfaces (39%), within 10 miles by trees (40%) and cropland (34%), and within 50 miles by trees (69%) and cropland (21%).

Data Sources

This report illustrates the typical weather at Anderson County Airport, 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

Anderson County Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Clemson-Oconee County Airport, Pickens County Airport, Donaldson Center Airport, Greenville Downtown Airport, Greenwood County Airport, Greenville–Spartanburg International Airport, Washington-Wilkes County Airport, and Laurens County Airport.

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 aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.