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George Mason, VA weather and climate

Fairfax County, VA · population 9,954 · about 423 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at George Mason's own coordinates.

The year at a glance

Sunny days
207
clear or partly cloudy, per year
Precipitation
42 in
per year
Wet days
118
rain or snow per year
Snowfall
17 in
per year
Hot days
18
above 90 °F
Freezing nights
103
at or below 32 °F
Humidity
69%
average relative
Average temperature
55 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
20406080JanMarMayJulSepNovDaily high, Jan: 42 °FDaily high, Feb: 46 °FDaily high, Mar: 54 °FDaily high, Apr: 65 °FDaily high, May: 72 °FDaily high, Jun: 80 °FDaily high, Jul: 85 °FDaily high, Aug: 83 °FDaily high, Sep: 76 °FDaily high, Oct: 66 °FDaily high, Nov: 56 °FDaily high, Dec: 46 °FDaily low, Jan: 24 °FDaily low, Feb: 25 °FDaily low, Mar: 32 °FDaily low, Apr: 42 °FDaily low, May: 52 °FDaily low, Jun: 61 °FDaily low, Jul: 67 °FDaily low, Aug: 65 °FDaily low, Sep: 57 °FDaily low, Oct: 45 °FDaily low, Nov: 35 °FDaily low, Dec: 28 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high424654657280858376665646
Daily low242532425261676557453528

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovGeorge Mason, Jan: 3.1 inGeorge Mason, Feb: 2.8 inGeorge Mason, Mar: 3.9 inGeorge Mason, Apr: 3.4 inGeorge Mason, May: 3.7 inGeorge Mason, Jun: 3.5 inGeorge Mason, Jul: 3.8 inGeorge Mason, Aug: 3.5 inGeorge Mason, Sep: 4.3 inGeorge Mason, Oct: 3.4 inGeorge Mason, Nov: 2.9 inGeorge Mason, Dec: 3.4 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
George Mason3.12.83.93.43.73.53.83.54.33.42.93.4

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovGeorge Mason, Jan: 17 daysGeorge Mason, Feb: 15 daysGeorge Mason, Mar: 16 daysGeorge Mason, Apr: 16 daysGeorge Mason, May: 16 daysGeorge Mason, Jun: 17 daysGeorge Mason, Jul: 19 daysGeorge Mason, Aug: 19 daysGeorge Mason, Sep: 18 daysGeorge Mason, Oct: 19 daysGeorge Mason, Nov: 18 daysGeorge Mason, Dec: 17 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
George Mason171516161617191918191817

Compare George Mason with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Virginia city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).