April Weather in Fairfax

Last updated: March 2, 2024

The weather in Fairfax, United States, during April is characterized by an average temperature of 11°C (53°F). Highs can soar to 30°C (85°F), while lows may dip to -5°C (23°F). Typically, the humidity level in Fairfax throughout April hovers around 74%.

-5°C (23°F)

Minimum temperature

11°C (53°F)

Average temperature

30°C (85°F)

Maximum temperature

74%

Humidity

Precipitation and Sunshine hours

In April, Fairfax averages 84 mm (3.3 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 13 hours 18 minutes of daylight, with the sun shining for approximately 8 hours 56 minutes each day. Additionally, there is a 52% probability of sunny days during this period.

84 mm (3.3 inches)

Precipitation

10 rainy days

Rainy days

8 hours 56 minutes

Sunshine hours

52%

Chance of sun

UV Index

In April, the UV Index in Fairfax reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 2 4 6 8 9 8 7 5 3 2 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

Compare Fairfax's Climate with Cities Worldwide