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Extreme Heat Warning EXTREME HEAT WARNING - Fairfax  - Hanover
Air Quality Alert AIR QUALITY ALERT - Fairfax

Regional Radar Regional Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.
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Updated: @ 04-Jul-2026 12:40pm  
Summary / Temperature Wind Rain Outlook
Few Clouds Few Clouds
Currently: 100.9, Max: 100.9, Min: 78.6 100.9°F
Warmer 0.8°F than last hour.

Hot

Feels like: 101°F

  Today Yesterday
High: 100.9°F
12:19pm 		102.6°F
3:09pm
Low: 78.6°F
7:03am 		79.9°F
7:20am
Calm S
0
Gust:
 0 mph
0 Bft - Calm
Today: 4.9 mph 11:30am
Gust Month: 8.9 mph July 01
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
This Month: 0.01 in
Season Total: 3.34 in
day since last rain.
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Humidity & Barometer Almanac Moon
Humidity: 37 % Decreased 2.9% since last hour.
Dew Point: 69.8°F Decreased 1.5°F since last hour.
Barometer: 29.88 inHg  
Baro Trend: Steady
Sunrise: 5:49am
Sunset: 8:38pm
Moonset: 10:09am
Moonrise: 11:27pm
Waning Gibbous
Waning Gibbous, Moon at 18 days in cycle
80%
Illuminated
UV Index Forecast UV Index Forecast
04-Jul-2026
9.4     Very High 
05-Jul-2026
9.9     Very High 
 NWS Weather Forecast  - Outlook: Independence Day & Tonight
Independence
Day
Independence Day: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 99 °F		 NWS forecast: A chance of showers and thunderstorms after 3pm. Some of the storms could be severe. Mostly sunny, with a high near 99. Heat index values as high as 108. West wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Davis VP+ forecast: Increasing clouds with little temperature change.
 
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Lo 74 °F		 NWS forecast: A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm, then scattered showers and thunderstorms between 10pm and 11pm, then a chance of showers and thunderstorms between 11pm and 5am. Some of the storms could be severe. Mostly cloudy, with a low around 74. Heat index values as high as 101. Southwest wind 1 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.