National Weather Service Forecast for: Portland ME
Issued by: National Weather Service Gray/Portland, ME
Updated: 6:07 am EDT May 29, 2026
 
Today

Today: A 30 percent chance of rain after 5pm. Partly sunny, with a high near 60. Light southeast wind becoming south 5 to 10 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Partly Sunny
then Chance
Rain
 Tonight

Tonight: Rain before 11pm, then rain and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Low around 43. Breezy, with a southeast wind 15 to 20 mph becoming east 20 to 25 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Rain and
Breezy
 Saturday

Saturday: Rain before 1pm, then a chance of showers, mainly between 1pm and 3pm. High near 53. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Rain and
Breezy
 Saturday
Night
Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 43. North wind around 5 mph becoming northwest after midnight.
Decreasing
Clouds
 Sunday

Sunday: Mostly sunny, with a high near 63. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Mostly Sunny

 Sunday
Night
Sunday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Showers
Likely
 Monday

Monday: A 50 percent chance of showers. Partly sunny, with a high near 59.
Chance
Showers
 Monday
Night
Monday Night: A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 46.
Chance
Showers then
Mostly Cloudy
 Tuesday

Tuesday: A 40 percent chance of showers after 8am. Partly sunny, with a high near 63.
Chance
Showers
Hi 60 °F Lo 43 °F Hi 53 °F Lo 43 °F Hi 63 °F Lo 48 °F Hi 59 °F Lo 46 °F Hi 63 °F

Wind Advisory
 

Today
 
 A 30 percent chance of rain after 5pm. Partly sunny, with a high near 60. Light southeast wind becoming south 5 to 10 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
 Rain before 11pm, then rain and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Low around 43. Breezy, with a southeast wind 15 to 20 mph becoming east 20 to 25 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday
 
 Rain before 1pm, then a chance of showers, mainly between 1pm and 3pm. High near 53. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
 
 Mostly cloudy, then gradually becoming mostly clear, with a low around 43. North wind around 5 mph becoming northwest after midnight.
Sunday
 
 Mostly sunny, with a high near 63. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Sunday Night
 
 Showers likely, mainly after 11pm. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Monday
 
 A 50 percent chance of showers. Partly sunny, with a high near 59.
Monday Night
 
 A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 46.
Tuesday
 
 A 40 percent chance of showers after 8am. Partly sunny, with a high near 63.
Tuesday Night
 
 A 30 percent chance of showers before 10pm. Mostly cloudy, with a low around 47.
Wednesday
 
 A 30 percent chance of showers. Partly sunny, with a high near 66.
Wednesday Night
 
 Partly cloudy, with a low around 50.
Thursday
 
 Mostly sunny, with a high near 73.

 

Forecast from NOAA-NWS for Portland ME.