Monthly Historical AveragesFairfax, VA
Average Temperature
High
13°
Feels 12
Low
3°
Feels 0
Average Precipitation
9 Days
51.9mm
7.6cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, March 18, 2026
Day
5°Feels 3
Wind
10 km/h S
Gust
15 km/h
Humidity
32%
P.O.P
30%
Night
-2°Feels -5
Wind
11 km/h SE
Gust
17 km/h
Humidity
80%
P.O.P
20%
Historical AveragesMar 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity