Fairfax city Climate
Fairfax city, Virginia
Avg Annual Temp
54.9°F
Annual Precip
43.4"
Annual Snowfall
19.8"
Extreme Heat Days
23.05
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
DryWet❄= snowfall
❄3.1"
❄2.6"
❄3.7"
❄3.4"
4.5"
4.2"
4.2"
3.5"
4.0"
3.6"
❄3.1"
❄3.4"
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seasonal Overview
National Comparison
Warmer than 52% of US counties
Wetter than 54% of US counties
More seasonal variation than 48% of US counties
Frequently Asked Questions
What is the average temperature in Fairfax city?
The average annual temperature in Fairfax city, VA is 54.9°F, based on NOAA 30-year climate normals (1991-2020).
How much rain does Fairfax city get?
Fairfax city receives an average of 43.4 inches of precipitation per year, including both rain and meltwater from snow. This is based on NOAA 30-year climate normals.
Does it snow in Fairfax city?
Yes, Fairfax city receives an average of 19.8 inches of snowfall per year according to NOAA climate normals.
How hot does Fairfax city get in summer?
The average summer temperature (June-August) in Fairfax city is 74.1°F. The county experiences an average of 23.05 days per year above 90°F.
How cold are winters in Fairfax city?
The average winter temperature (December-February) in Fairfax city is 35.5°F. January, typically the coldest month, averages 33.4°F.
Track your own weather in Fairfax city
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.