National Weather Service Forecast for: Reston VA
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 7:34 pm EDT Sep 12, 2026
 
Tonight

Tonight: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 11pm.  Low around 69. Southeast wind 5 to 7 mph becoming calm  after midnight.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers

Sunday

Sunday: Showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am.  Patchy fog before 8am. High near 86. Calm wind becoming northwest 5 to 7 mph in the morning.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers and
Patchy Fog
then Partly
Sunny
Sunday
Night
Sunday Night: Partly cloudy, with a low around 68. Calm wind becoming northwest around 6 mph after midnight.
Partly Cloudy

Monday

Monday: Mostly sunny, with a high near 79. North wind 10 to 13 mph, with gusts as high as 22 mph.
Mostly Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 54. North wind 3 to 6 mph.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 80.
Sunny

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 58.
Mostly Clear

Wednesday

Wednesday: Sunny, with a high near 81.
Sunny

Wednesday
Night
Wednesday Night: Mostly clear, with a low around 62.
Mostly Clear

Lo 69 °F Hi 86 °F Lo 68 °F Hi 79 °F Lo 54 °F Hi 80 °F Lo 58 °F Hi 81 °F Lo 62 °F

Hazardous Weather Outlook
 

Tonight
 
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 69. Southeast wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
 
Showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Patchy fog before 8am. High near 86. Calm wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
Partly cloudy, with a low around 68. Calm wind becoming northwest around 6 mph after midnight.
Monday
 
Mostly sunny, with a high near 79. North wind 10 to 13 mph, with gusts as high as 22 mph.
Monday Night
 
Mostly clear, with a low around 54. North wind 3 to 6 mph.
Tuesday
 
Sunny, with a high near 80.
Tuesday Night
 
Mostly clear, with a low around 58.
Wednesday
 
Sunny, with a high near 81.
Wednesday Night
 
Mostly clear, with a low around 62.
Thursday
 
Sunny, with a high near 85.
Thursday Night
 
Mostly clear, with a low around 65.
Friday
 
A chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
 
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Saturday
 
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Reston VA.