National Weather Service Forecast for: Chevy Chase MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 4:53 am EDT Aug 20, 2026
 
Overnight

Overnight: Isolated showers and thunderstorms. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.
Isolated
T-storms

 Thursday

Thursday: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 86. Calm wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Isolated
T-storms then
Showers

 Thursday
Night
Thursday Night: Showers and thunderstorms likely, mainly before 9pm. Patchy fog between 10pm and 2am. Otherwise, mostly cloudy, with a low around 67. North wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Showers
Likely and
Patchy Fog
then Patchy
Fog
 Friday

Friday: A chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 81. North wind around 6 mph becoming east in the afternoon. Chance of precipitation is 30%.
Mostly Sunny
then Chance
T-storms

 Friday
Night
Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 68. Light east wind. Chance of precipitation is 70%.
Showers
Likely

 Saturday

Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Showers
Likely

 Saturday
Night
Saturday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Showers
Likely then
Chance
Showers
 Sunday

Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Mostly Sunny
then Chance
Showers

 Sunday
Night
Sunday Night: A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 65. Chance of precipitation is 30%.
Chance
Showers then
Mostly Clear
Lo 71 °F Hi 86 °F Lo 67 °F Hi 81 °F Lo 68 °F Hi 83 °F Lo 68 °F Hi 83 °F Lo 65 °F

Hazardous Weather Outlook
 

Overnight
 
 Isolated showers and thunderstorms. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.
Thursday
 
 Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 86. Calm wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
 
 Showers and thunderstorms likely, mainly before 9pm. Patchy fog between 10pm and 2am. Otherwise, mostly cloudy, with a low around 67. North wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 A chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 81. North wind around 6 mph becoming east in the afternoon. Chance of precipitation is 30%.
Friday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 68. Light east wind. Chance of precipitation is 70%.
Saturday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Saturday Night
 
 Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Sunday
 
 A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Sunday Night
 
 A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 65. Chance of precipitation is 30%.
Monday
 
 Sunny, with a high near 81.
Monday Night
 
 Mostly clear, with a low around 64.
Tuesday
 
 Mostly sunny, with a high near 83.
Tuesday Night
 
 Partly cloudy, with a low around 66.
Wednesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Chevy Chase MD.