National Weather Service Forecast for: Potomac MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 1:33 am EDT May 30, 2025
 
Overnight

Overnight: Isolated showers and thunderstorms before 5am. Cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.
Isolated
T-storms
 Friday

Friday: Scattered showers, then showers likely and possibly a thunderstorm after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Partly Sunny
then Showers
Likely
 Friday
Night
Friday Night: Showers and thunderstorms before 2am, then a chance of showers between 2am and 5am. Some of the storms could produce heavy rainfall. Low around 57. East wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain

 Saturday

Saturday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 70. West wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm before 8pm. Low around 48. Northwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Showers then
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 71.
Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 51.
Mostly Clear

 Monday

Monday: Sunny, with a high near 75.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 56.
Mostly Clear
Lo 63 °F Hi 78 °F Lo 57 °F Hi 70 °F Lo 48 °F Hi 71 °F Lo 51 °F Hi 75 °F Lo 56 °F

Flood Watch
Hazardous Weather Outlook
 

Overnight
 
 Isolated showers and thunderstorms before 5am. Cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.
Friday
 
 Scattered showers, then showers likely and possibly a thunderstorm after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 Showers and thunderstorms before 2am, then a chance of showers between 2am and 5am. Some of the storms could produce heavy rainfall. Low around 57. East wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Saturday
 
 Showers likely, then showers and possibly a thunderstorm after 11am. High near 70. West wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
 
 Showers and possibly a thunderstorm before 8pm. Low around 48. Northwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday
 
 Sunny, with a high near 71.
Sunday Night
 
 Mostly clear, with a low around 51.
Monday
 
 Sunny, with a high near 75.
Monday Night
 
 Mostly clear, with a low around 56.
Tuesday
 
 Sunny, with a high near 83.
Tuesday Night
 
 Mostly clear, with a low around 62.
Wednesday
 
 Sunny, with a high near 88.
Wednesday Night
 
 Partly cloudy, with a low around 69.
Thursday
 
 A chance of showers. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Potomac MD.