July Weather in Fairfax

Last updated: March 2, 2024

The weather in Fairfax, United States, during July is characterized by an average temperature of 26°C (79°F). Highs can soar to 36°C (98°F), while lows may dip to 16°C (61°F). Typically, the humidity level in Fairfax throughout July hovers around 83%.

16°C (61°F)

Minimum temperature

26°C (79°F)

Average temperature

36°C (98°F)

Maximum temperature

83%

Humidity

Precipitation and Sunshine hours

In July, Fairfax averages 112 mm (4.4 inches) of rainfall, typically over the course of 8 rainy days. The month enjoys an average of 14 hours 41 minutes of daylight, with the sun shining for approximately 12 hours 1 minutes each day. Additionally, there is a 56% probability of sunny days during this period.

112 mm (4.4 inches)

Precipitation

8 rainy days

Rainy days

12 hours 1 minutes

Sunshine hours

56%

Chance of sun

UV Index

In July, the UV Index in Fairfax reaches a maximum of 10, 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 2 3 5 7 9 10 10 9 7 4 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