National Weather Service Forecast for: Fairfax, VA
Issued by: National Weather Service Baltimore/Washington
Updated: Mon, 03-Aug-2026 4:53am EDT

Fairfax
 
  Monday

Monday: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Tuesday

Tuesday: Mostly Cloudy
Mostly Cloudy
Wednesday

Wednesday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Thursday

Thursday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Friday

Friday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Saturday

Saturday: Partly Sunny then Showers And Thunderstorms Likely
Partly Sunny then Showers And T-Storms Likely
Sunday

Sunday: Partly Sunny then Chance Showers And Thunderstorms
Partly Sunny then Chance Showers And T-Storms
  Hi 85 °F Hi 85 °F Hi 86 °F Hi 89 °F Hi 89 °F Hi 88 °F Hi 88 °F
 
Overnight

Overnight: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Tuesday
Night
Tuesday Night: Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Showers And Thunderstorms Likely then Mostly Cloudy
Showers And T-Storms Likely then Mostly Cloudy
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Saturday
Night
Saturday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
 
Lo 72 °F Lo 68 °F Lo 69 °F Lo 72 °F Lo 73 °F Lo 72 °F Lo 71 °F  

 

Overnight
 
A chance of showers and thunderstorms. Cloudy, with a low around 72. South wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Monday
 
A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 10am, then a slight chance of showers and thunderstorms between 10am and noon, then a chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. West wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday Night
 
Partly cloudy, with a low around 68. North wind 2 to 6 mph. New rainfall amounts less than a tenth of an inch possible.
Tuesday
 
Mostly cloudy, with a high near 85. Northeast wind around 6 mph.
Tuesday Night
 
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. East wind 1 to 6 mph. Chance of precipitation is 40%.
Wednesday
 
Showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
 
Showers and thunderstorms likely before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Thursday
 
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
 
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Friday
 
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Friday Night
 
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Saturday
 
Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Saturday Night
 
Showers and thunderstorms likely before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Sunday
 
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Fairfax, VA.