February Weather in Fairfax, United States

Last updated: June 24, 2025

In February, the average temperature in Fairfax, United States hovers around 4°C (39°F). Expect a climate that can swing from a chilly -26°C (-15°F) at its coldest, to a warm 30°C (86°F) at its peak. With an average precipitation of 43 mm (1.7 in) over 6 days, and a humidity level of 76%, it's wise to prepare for both cool breezes and the occasional shower.

February Temperature in Fairfax

In February in Fairfax, the average temperature is 4°C (39°F). Maximums can reach 30°C (86°F) while minimums can drop as low as -26°C (-15°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

February Weather in Fairfax: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Fairfax, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fairfax, February typically has an average temperature of 4°C (39°F), with highs reaching up to 30°C (86°F) and lows dropping to around -26°C (-15°F).

Data source: Temperature data for Fairfax generated using information from the Copernicus Climate Change Service.

February Precipitation in Fairfax

In Fairfax in February, the precipitation amount is 43 mm (1.7 in) over a period of 6 days.

February Precipitation Trends in Fairfax

The chart displays monthly precipitation patterns in Fairfax, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Fairfax, February typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

February Humidity in Fairfax

In Fairfax in February humidity is 76%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making it quite uncomfortable for traveling.

February Average Humidity in Fairfax

This chart illustrates the average monthly humidity levels in Fairfax, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Fairfax is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in Fairfax

In Fairfax in February, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Fairfax, you can refer to this Hourly UV Index in Fairfax.

Maximum UV Index Levels in Fairfax for February

The chart shows the monthly maximum UV Index (UVI) for Fairfax in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in Fairfax typically reaches 6, which falls under the high exposure category.

Data source: Fairfax February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How February Weather in Fairfax Compares to Other Months

Weather in Fairfax varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in Fairfax, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Fairfax, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	57 mm (2.3 inches)	77%	moderate
February Weather	4°C (39°F)	43 mm (1.7 inches)	76%	high
March Weather	11°C (52°F)	97 mm (3.8 inches)	71%	high
April Weather	15°C (59°F)	104 mm (4.1 inches)	73%	very high
May Weather	20°C (69°F)	160 mm (6.3 inches)	83%	very high
June Weather	26°C (79°F)	101 mm (4.0 inches)	83%	extreme
July Weather	28°C (82°F)	80 mm (3.2 inches)	81%	extreme
August Weather	27°C (80°F)	103 mm (4.1 inches)	73%	very high
September Weather	24°C (76°F)	88 mm (3.4 inches)	67%	very high
October Weather	16°C (61°F)	121 mm (4.8 inches)	72%	high
November Weather	9°C (49°F)	34 mm (1.3 inches)	82%	moderate
December Weather	6°C (43°F)	35 mm (1.4 inches)	85%	moderate