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United StatesThe climate of Fairfax
The current climate in Fairfax features temperatures ranging from a high of 31°C to a low of 7°C throughout the year. The average yearly temperature is around 20°C. At night, temperatures in the colder months average around -3°C and in the warmer months around 20°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Fairfax, Virginia.
Temperature records
The highest temperature recorded in Fairfax in recent years was 38°C in July 2016. The lowest daytime temperature recorded was -9°C in February 2015.
Precipitation and snowfall
On average, Fairfax gets 1504 mm of precipitation each year. Of this, about 24 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Fairfax?
The best time to visit Fairfax for mild to warm weather is April, May, July, September and October. You might get some rain, but the temperatures are just right to explore Fairfax.
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Climate Table of Fairfax
The climate table of Fairfax shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 7 | 9 | 13 | 20 | 24 | 29 | 31 | 30 | 27 | 22 | 14 | 10 |
| Temp. min (°C) | -2 | -1 | 2 | 8 | 13 | 18 | 21 | 20 | 17 | 11 | 3 | 0 |
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| Precipitation (mm) | 93 | 83 | 111 | 121 | 117 | 205 | 142 | 215 | 75 | 94 | 126 | 122 |
| Snow (cm) | 6,9 | 6,2 | 8,6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,4 | 1,2 |
| UV Index | 3 | 5 | 5 | 7 | 7 | 8 | 8 | 6 | 8 | 5 | 3 | 3 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Fairfax, Virginia. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Fairfax
Yearly Temperature in Fairfax
Precipitation charts
These charts show the average amount of precipitation in Fairfax, Virginia. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Fairfax
Total Yearly Precipitation in Fairfax
Average Snowfall per Month in Fairfax
Total Yearly Snowfall in Fairfax
UV index chart
This chart shows the average UV index per month in Fairfax, Virginia. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Fairfax
Weather experiences in Fairfax
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Average weather in Fairfax by month
Click on a month below to see detailed weather info for Fairfax. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.