Average Weather in Ashburn Georgia, United States
In Ashburn, the summers are long, hot, and oppressive; the winters are short and cold; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 41°F to 91°F and is rarely below 28°F or above 97°F.
Based on the tourism score, the best times of year to visit Ashburn for warm-weather activities are from mid April to late May and from mid September to late October.
The hot season lasts for 4.0 months, from May 19 to September 20, with an average daily high temperature above 85°F. The hottest day of the year is July 22, with an average high of 91°F and low of 74°F.
The cool season lasts for 2.9 months, from November 30 to February 25, with an average daily high temperature below 66°F. The coldest day of the year is January 17, with an average low of 41°F and high of 60°F.
Average High and Low Temperature
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 Ashburn, 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 Ashburn begins around September 4 and lasts for 3.1 months, ending around December 8. On October 27, 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 December 8 and lasts for 8.9 months, ending around September 4. On July 12, the cloudiest day of the year, the sky is overcast or mostly cloudy 53% of the time, and clear, mostly clear, or partly cloudy 47% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Ashburn varies significantly throughout the year.
The wetter season lasts 3.4 months, from May 30 to September 11, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 53% on July 30.
The drier season lasts 8.6 months, from September 11 to May 30. The smallest chance of a wet day is 15% on October 30.
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 53% on July 30.
Daily Chance of Precipitation
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. Ashburn experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Ashburn. The most rain falls during the 31 days centered around March 2, with an average total accumulation of 4.6 inches.
The least rain falls around October 21, with an average total accumulation of 2.2 inches.
Average Monthly Rainfall
The length of the day in Ashburn varies significantly over the course of the year. In 2018, the shortest day is December 21, with 10 hours, 5 minutes of daylight; the longest day is June 21, with 14 hours, 13 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:28 AM on June 12, and the latest sunrise is 1 hour, 24 minutes later at 7:52 AM on November 3. The earliest sunset is at 5:30 PM on December 3, and the latest sunset is 3 hours, 13 minutes later at 8:43 PM on June 30.
Daylight saving time (DST) is observed in Ashburn during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
Ashburn experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 5.3 months, from May 9 to October 18, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is July 23, with muggy conditions 97% of the time.
The least muggy day of the year is January 24, with muggy conditions 1% of the time.
Humidity Comfort Levels
The average hourly wind speed in Ashburn experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 7.4 months, from September 29 to May 10, with average wind speeds of more than 7.7 miles per hour. The windiest day of the year is March 8, with an average hourly wind speed of 9.4 miles per hour.
The calmer time of year lasts for 4.6 months, from May 10 to September 29. The calmest day of the year is August 8, with an average hourly wind speed of 6.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Ashburn varies throughout the year.
The wind is most often from the east for 3.7 months, from August 15 to December 6, with a peak percentage of 47% on September 8. The wind is most often from the north for 3.0 weeks, from December 6 to December 27, with a peak percentage of 28% on December 15. The wind is most often from the west for 7.6 months, from December 27 to August 15, with a peak percentage of 28% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Ashburn 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 Ashburn for general outdoor tourist activities are from mid April to late May and from mid September to late October, with a peak score in the first week of May.
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 Ashburn for hot-weather activities is from mid May to late September, with a peak score in the first week of September.
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.
The growing season in Ashburn typically lasts for 9.4 months (284 days), from around February 21 to around December 2, rarely starting before January 30 or after March 16, and rarely ending before November 10 or after December 26.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Ashburn should appear around January 22, only rarely appearing before January 13 or after February 6.
Growing Degree Days
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 3.2 months, from April 7 to July 13, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is May 17, with an average of 6.8 kWh.
The darker period of the year lasts for 2.7 months, from November 14 to February 4, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 21, with an average of 2.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Ashburn are 31.706 deg latitude, -83.653 deg longitude, and 387 ft elevation.
The topography within 2 miles of Ashburn contains only modest variations in elevation, with a maximum elevation change of 108 feet and an average elevation above sea level of 403 feet. Within 10 miles also contains only modest variations in elevation (207 feet). Within 50 miles also contains only modest variations in elevation (433 feet).
The area within 2 miles of Ashburn is covered by cropland (69%), artificial surfaces (20%), and trees (12%), within 10 miles by cropland (70%) and trees (25%), and within 50 miles by cropland (52%) and trees (36%).
This report illustrates the typical weather in Ashburn, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Ashburn.
For each station, the records are corrected for the elevation difference between that station and Ashburn 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 Ashburn is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ashburn and a given station.
The stations contributing to this reconstruction are: Henry Tift Myers Airport (36%, 35 kilometers, southeast); Fitzgerald Municipal Airport (33%, 36 kilometers, east); Southwest Georgia Regional Airport (18%, 55 kilometers, west); and Jimmy Carter Regional Airport (13%, 68 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .