National Weather Service Forecast for: Potomac MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 12:53 am EST Dec 20, 2025
 
Overnight

Overnight: Partly cloudy, with a low around 27. Northwest wind around 5 mph.
Partly Cloudy

 Saturday

Saturday: Sunny, with a high near 43. Calm wind becoming south 5 to 9 mph in the afternoon.
Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 35. South wind 6 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Mostly Clear

 Sunday

Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 48. West wind 6 to 13 mph, with gusts as high as 23 mph.
Decreasing
Clouds
 Sunday
Night
Sunday Night: Mostly clear, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Mostly Clear

 Monday

Monday: Sunny, with a high near 39.
Sunny

 Monday
Night
Monday Night: A chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Mostly Cloudy
then Chance
Rain/Snow
 Tuesday

Tuesday: Mostly cloudy, with a high near 50.
Mostly Cloudy

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 37.
Partly Cloudy
Lo 27 °F Hi 43 °F Lo 35 °F Hi 48 °F Lo 23 °F Hi 39 °F Lo 31 °F Hi 50 °F Lo 37 °F

 

Overnight
 
 Partly cloudy, with a low around 27. Northwest wind around 5 mph.
Saturday
 
 Sunny, with a high near 43. Calm wind becoming south 5 to 9 mph in the afternoon.
Saturday Night
 
 Mostly clear, with a low around 35. South wind 6 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Sunday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 48. West wind 6 to 13 mph, with gusts as high as 23 mph.
Sunday Night
 
 Mostly clear, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Monday
 
 Sunny, with a high near 39.
Monday Night
 
 A chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Tuesday
 
 Mostly cloudy, with a high near 50.
Tuesday Night
 
 Partly cloudy, with a low around 37.
Wednesday
 
 Mostly sunny, with a high near 48.
Wednesday Night
 
 Mostly cloudy, with a low around 36.
Christmas Day
 
 Partly sunny, with a high near 56.
Thursday Night
 
 Mostly cloudy, with a low around 48.
Friday
 
 Partly sunny, with a high near 61.

 

Forecast from NOAA-NWS for Potomac MD.