National Weather Service Forecast for: Reston VA
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 1:30 am EDT Jul 25, 2025
 
Overnight

Overnight: Clear, with a low around 74. Southwest wind around 6 mph.
Clear

Friday

Friday: A slight chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 97. Heat index values as high as 107. West wind 3 to 7 mph.  Chance of precipitation is 20%.
Sunny then
Slight Chance
T-storms
Friday
Night
Friday Night: Partly cloudy, with a low around 76. Southwest wind around 6 mph becoming north after midnight.
Partly Cloudy

Saturday

Saturday: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 93. Heat index values as high as 100. North wind around 5 mph becoming light and variable.  Chance of precipitation is 50%.
Mostly Sunny
then Chance
T-storms
Saturday
Night
Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. Southeast wind 3 to 5 mph.  Chance of precipitation is 50%.
Chance
T-storms then
Chance
Showers
Sunday

Sunday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Mostly cloudy, with a high near 91. Chance of precipitation is 70%.
Slight Chance
T-storms then
Showers
Likely
Sunday
Night
Sunday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am.  Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Showers
Likely then
Chance
Showers
Monday

Monday: Mostly sunny, with a high near 92.
Mostly Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 75.
Mostly Clear

Lo 74 °F Hi 97 °F Lo 76 °F Hi 93 °F Lo 75 °F Hi 91 °F Lo 75 °F Hi 92 °F Lo 75 °F

Heat Advisory
 

Overnight
 
Clear, with a low around 74. Southwest wind around 6 mph.
Friday
 
A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Heat index values as high as 107. West wind 3 to 7 mph. Chance of precipitation is 20%.
Friday Night
 
Partly cloudy, with a low around 76. Southwest wind around 6 mph becoming north after midnight.
Saturday
 
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 93. Heat index values as high as 100. North wind around 5 mph becoming light and variable. Chance of precipitation is 50%.
Saturday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Southeast wind 3 to 5 mph. Chance of precipitation is 50%.
Sunday
 
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 91. Chance of precipitation is 70%.
Sunday Night
 
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Monday
 
Mostly sunny, with a high near 92.
Monday Night
 
Mostly clear, with a low around 75.
Tuesday
 
Mostly sunny, with a high near 96.
Tuesday Night
 
Mostly clear, with a low around 74.
Wednesday
 
Mostly sunny, with a high near 96.
Wednesday Night
 
Partly cloudy, with a low around 71.
Thursday
 
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Reston VA.