National Weather Service Forecast for: Potomac MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 6:56 am EST Dec 18, 2025
 
Today

Today: A chance of rain, mainly between 3pm and 5pm. Increasing clouds, with a high near 52. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 30%.
Mostly Sunny
then Chance
Rain
 Tonight

Tonight: Rain. Temperature rising to around 56 by 4am. South wind 8 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Rain

 Friday

Friday: Rain, mainly before 8am. Temperature falling to around 37 by 5pm. Breezy, with a west wind 16 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain then
Mostly Sunny
and Breezy
 Friday
Night
Friday Night: Mostly clear, with a low around 26. West wind 10 to 15 mph becoming light northwest after midnight. Winds could gust as high as 33 mph.
Mostly Clear

 Saturday

Saturday: Mostly sunny, with a high near 44. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 37.
Partly Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 49.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 24.
Mostly Clear

 Monday

Monday: Mostly sunny, with a high near 37.
Mostly Sunny
Hi 52 °F Lo 48 °F⇑ Hi 54 °F⇓ Lo 26 °F Hi 44 °F Lo 37 °F Hi 49 °F Lo 24 °F Hi 37 °F

Hazardous Weather Outlook
 

Today
 
 A chance of rain, mainly between 3pm and 5pm. Increasing clouds, with a high near 52. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 30%.
Tonight
 
 Rain. Temperature rising to around 56 by 4am. South wind 8 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
 
 Rain, mainly before 8am. Temperature falling to around 37 by 5pm. Breezy, with a west wind 16 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
 
 Mostly clear, with a low around 26. West wind 10 to 15 mph becoming light northwest after midnight. Winds could gust as high as 33 mph.
Saturday
 
 Mostly sunny, with a high near 44. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
 
 Partly cloudy, with a low around 37.
Sunday
 
 Mostly sunny, with a high near 49.
Sunday Night
 
 Mostly clear, with a low around 24.
Monday
 
 Mostly sunny, with a high near 37.
Monday Night
 
 Mostly cloudy, with a low around 28.
Tuesday
 
 Mostly cloudy, with a high near 44.
Tuesday Night
 
 Mostly cloudy, with a low around 36.
Wednesday
 
 Partly sunny, with a high near 51.

 

Forecast from NOAA-NWS for Potomac MD.