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Heat Advisory HEAT ADVISORY - Fairfax

Regional Radar Regional Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.
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Updated: @ 15-Jul-2026 8:30am  
Summary / Temperature Wind Rain Outlook
Mostly cloudy Mostly cloudy
Currently: 75.4, Max: 75.4, Min: 70.9 75.4°F
Warmer 2.8°F than last hour.

Comfortable

Feels like: 75°F

  Today Yesterday
High: 75.4°F
8:26am 		91.8°F
3:40pm
Low: 70.9°F
7:13am 		74.8°F
8:56am
Calm N
0
Gust:
 0 mph
0 Bft - Calm
Today: 0.9 mph 7:19am
Gust Month: 19.9 mph July 04
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
This Month: 0.03 in
Season Total: 3.36 in
day since last rain.
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 86 % Decreased 1.7% since last hour.
Dew Point: 70.9°F Increased 2.2°F since last hour.
Barometer: 29.95 inHg  
Baro Trend: Steady
Sunrise: 5:56am
Sunset: 8:33pm
Moonrise: 7:10am
Moonset: 9:48pm
Waxing Crescent
Waxing Crescent, Moon at 2 days in cycle
2%
Illuminated
UV Index Forecast UV Index Forecast
15-Jul-2026
9.2     Very High 
16-Jul-2026
9.4     Very High 
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Sunny
Sunny

Hi 99 °F		 NWS forecast: Sunny, with a high near 99. Heat index values as high as 103. West wind 5 to 8 mph.
Davis VP+ forecast: Increasing clouds with little temperature change.
 
Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 77 °F		 NWS forecast: Partly cloudy, with a low around 77. Heat index values as high as 103. West wind 3 to 7 mph.