Weather forecast March 25, 2023 - P1

Climate and Average Weather Year Round in Fairfax Virginia, United States

In Fairfax, the summers are warm and humid, the winters are very cold and snowy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 26°F to 87°F and is rarely below 13°F or above 94°F.

Based on the tourism score, the best times of year to visit Fairfax for warm-weather activities are from early June to early July and from early August to late September.

Average Temperature in Fairfax 

The hot season lasts for 3.6 months, from May 30 to September 16, with an average daily high temperature above 78°F. The hottest month of the year in Fairfax is July, with an average high of 86°F and low of 67°F.

The cold season lasts for 3.1 months, from December 1 to March 3, with an average daily high temperature below 51°F. The coldest month of the year in Fairfax is January, with an average low of 27°F and high of 42°F.

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. Fairfax experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Fairfax. The month with the most rain in Fairfax is May, with an average rainfall of 3.6 inches.

The month with the least rain in Fairfax is January, with an average rainfall of 1.8 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Fairfax experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.3 months, from November 18 to March 28, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Fairfax is February, with an average snowfall of 7.2 inches.

The snowless period of the year lasts for 7.7 months, from March 28 to November 18. The least snow falls around July 18, with an average total accumulation of 0.0 inches.

Weather forecast March 25, 2023

Weather 22030

High temperature : 78°F

Low temperature : 67°F

- Overcast clouds, Wind speed 10.36 mph, wind out of the SW. Visibility 7 mi, humidity 47% . Chance of Rain : 20 % .

Today's Air Quality - Weather 22030 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 22031

High temperature : 78°F

Low temperature : 67°F

- Overcast clouds, Wind speed 16.11 mph, wind out of the SW. Visibility 7 mi, humidity 43% . Chance of Rain : 0 % .

Today's Air Quality - Weather 22031 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 22032 - Fairfax, VA

High temperature : 79°F

Low temperature : 68°F

- Overcast clouds, Wind speed 10.36 mph, wind out of the SW. Visibility 7 mi, humidity 43% . Chance of Rain : 0 % .

Today's Air Quality - Weather 22032 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 22033

High temperature : 78°F

Low temperature : 68°F

- Overcast clouds, Wind speed 8.05 mph, wind out of the SW. Visibility 7 mi, humidity 46% . Chance of Rain : 20 % .

Today's Air Quality - Weather 22033 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 22034

High temperature : 78°F

Low temperature : 68°F

- Overcast clouds, Wind speed 16.11 mph, wind out of the SW. Visibility 7 mi, humidity 43% . Chance of Rain : 0 % .

Today's Air Quality - Weather 22034 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 22035

High temperature : 78°F

Low temperature : 68°F

- Overcast clouds, Wind speed 8.05 mph, wind out of the SW. Visibility 7 mi, humidity 46% . Chance of Rain : 20 % .

Today's Air Quality - Weather 22035 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 22036

High temperature : 78°F

Low temperature : 67°F

- Overcast clouds, Wind speed 16.11 mph, wind out of the SW. Visibility 7 mi, humidity 43% . Chance of Rain : 0 % .

Today's Air Quality - Weather 22036 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 22037

High temperature : 78°F

Low temperature : 64°F

- Overcast clouds, Wind speed 16.11 mph, wind out of the SW. Visibility 7 mi, humidity 41% . Chance of Rain : 40 % .

Today's Air Quality - Weather 22037 : Good

- Air Quality Index : CO : 267.03 ; NH3 : 1.44 ; NO : 0 ; NO2 : 12.17 ; O3 : 42.92 ; PM10 : 5.18 ; PM2.5 : 3.48 ; SO2 : 0.35

Weather 28277

High temperature : 69°F

Low temperature : 60°F

- Overcast clouds, Wind speed 6.91 mph, wind out of the S. Visibility 7 mi, humidity 67% . Chance of Rain : 0 % .

Today's Air Quality - Weather 28277 : Moderate

- Air Quality Index : CO : 226.97 ; NH3 : 1.49 ; NO : 0 ; NO2 : 2.83 ; O3 : 92.98 ; PM10 : 11.43 ; PM2.5 : 9.02 ; SO2 : 1.04

Weather 22039

High temperature : 79°F

Low temperature : 68°F

- Overcast clouds, Wind speed 10.36 mph, wind out of the SW. Visibility 7 mi, humidity 43% . Chance of Rain : 0 % .

Today's Air Quality - Weather 22039 : Moderate

- Air Quality Index : CO : 243.66 ; NH3 : 1.28 ; NO : 0 ; NO2 : 4.67 ; O3 : 79.39 ; PM10 : 8.65 ; PM2.5 : 6.77 ; SO2 : 1.12