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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 4:35am  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: [actual_th0_temp_f], Max: 91.8, Min: 74.8 0°F
 

Very Cold

Feels like: -0°F

  Today Yesterday
High: 91.8°F
3:40pm 		91.8°F
3:40pm
Low: 74.8°F
8:56am 		74.8°F
8:56am
Calm [actual_wind0_dir_en]
0
Gust:
 0 mph
0 Bft - Calm
Today: 8.9 mph 2:06pm
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.
Wednesday

Wednesday: Sunny
Sunny
Humidity & Barometer Almanac Moon
Humidity: [actual_th0_hum_rel] %  
Dew Point: 0°F  
Barometer: 29.91 inHg  
Baro Trend: Steady
Sunrise: 5:56am
Sunset: 8:33pm
Moonrise: 7:10am
Moonset: 9:48pm
Waxing Crescent
Waxing Crescent, Moon at 1 days in cycle
1%
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: Overnight & Wednesday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 71 °F		 NWS forecast: Mostly clear, with a low around 71. West wind around 6 mph.
Davis VP+ forecast: Mostly cloudy with little temperature change. Precipitation likely.
 
Wednesday

Wednesday: Sunny
Sunny

Hi 99 °F		 NWS forecast: Sunny, with a high near 99. Heat index values as high as 104. West wind 5 to 8 mph.