National Weather Service Forecast for: Belfast ME
Issued by: National Weather Service Gray/Portland, ME
Updated: 2:28 pm EDT Mar 19, 2026
 
Tonight

Tonight: A slight chance of snow between 2am and 3am. Mostly cloudy, with a low around 26. South wind around 5 mph. Chance of precipitation is 20%.
Mostly Cloudy
then Slight
Chance Snow
 Friday

Friday: A 30 percent chance of rain, mainly after 5pm. Increasing clouds, with a high near 44. Calm wind becoming south around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Sunny then
Chance Rain
 Friday
Night
Friday Night: Rain and snow, mainly before 4am. Low around 31. Southeast wind around 5 mph becoming west after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.
Rain/Snow

 Saturday

Saturday: A 30 percent chance of rain before 10am. Partly sunny, with a high near 45. Northwest wind 5 to 10 mph.
Chance Rain
then Mostly
Sunny
 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 28. Northwest wind around 5 mph.
Mostly Cloudy

 Sunday

Sunday: A chance of snow after 8am, mixing with rain after 11am. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
Chance
Rain/Snow
 Sunday
Night
Sunday Night: A chance of rain and snow before 2am, then a chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.
Chance
Rain/Snow
 Monday

Monday: A 50 percent chance of snow. Mostly cloudy, with a high near 38.
Chance Snow

 Monday
Night
Monday Night: Mostly cloudy, with a low around 20.
Mostly Cloudy
Lo 26 °F Hi 44 °F Lo 31 °F Hi 45 °F Lo 28 °F Hi 39 °F Lo 27 °F Hi 38 °F Lo 20 °F

 

Tonight
 
 A slight chance of snow between 2am and 3am. Mostly cloudy, with a low around 26. South wind around 5 mph. Chance of precipitation is 20%.
Friday
 
 A 30 percent chance of rain, mainly after 5pm. Increasing clouds, with a high near 44. Calm wind becoming south around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Rain and snow, mainly before 4am. Low around 31. Southeast wind around 5 mph becoming west after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.
Saturday
 
 A 30 percent chance of rain before 10am. Partly sunny, with a high near 45. Northwest wind 5 to 10 mph.
Saturday Night
 
 Mostly cloudy, with a low around 28. Northwest wind around 5 mph.
Sunday
 
 A chance of snow after 8am, mixing with rain after 11am. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
Sunday Night
 
 A chance of rain and snow before 2am, then a chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.
Monday
 
 A 50 percent chance of snow. Mostly cloudy, with a high near 38.
Monday Night
 
 Mostly cloudy, with a low around 20.
Tuesday
 
 Sunny, with a high near 39.
Tuesday Night
 
 Partly cloudy, with a low around 20.
Wednesday
 
 A 30 percent chance of snow. Mostly sunny, with a high near 41.
Wednesday Night
 
 Mostly cloudy, with a low around 20.
Thursday
 
 Partly sunny, with a high near 42.

 

Forecast from NOAA-NWS for Belfast ME.