National Weather Service Forecast for: Lebanon ME
Issued by: National Weather Service Gray/Portland, ME
Updated: 2:38 pm EDT Jun 29, 2026
 
Overnight

Overnight: Mostly clear, with a low around 58. Calm wind.
Mostly Clear
Tuesday

Tuesday: Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Partly Sunny
Tuesday
Night
Tuesday Night: Scattered showers and thunderstorms before 2am, then scattered showers between 2am and 3am.  Mostly cloudy, with a low around 65. Calm wind becoming southwest around 5 mph after midnight.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Scattered
Showers
Wednesday

Wednesday: Mostly sunny and hot, with a high near 95. Heat index values as high as 110. West wind around 5 mph.
Hot
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 72. West wind around 5 mph.
Partly Cloudy
Thursday

Thursday: Sunny and hot, with a high near 100.
Hot
Thursday
Night
Thursday Night: Mostly clear, with a low around 74.
Mostly Clear
Friday

Friday: Sunny and hot, with a high near 97.
Hot
Friday
Night
Friday Night: Mostly clear, with a low around 70.
Mostly Clear
Lo 58 °F Hi 88 °F Lo 65 °F Hi 95 °F Lo 72 °F Hi 100 °F Lo 74 °F Hi 97 °F Lo 70 °F

Extreme Heat Watch
 

Overnight
 
Mostly clear, with a low around 58. Calm wind.
Tuesday
 
Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
 
Scattered showers and thunderstorms before 2am, then scattered showers between 2am and 3am. Mostly cloudy, with a low around 65. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
Mostly sunny and hot, with a high near 95. Heat index values as high as 110. West wind around 5 mph.
Wednesday Night
 
Partly cloudy, with a low around 72. West wind around 5 mph.
Thursday
 
Sunny and hot, with a high near 100.
Thursday Night
 
Mostly clear, with a low around 74.
Friday
 
Sunny and hot, with a high near 97.
Friday Night
 
Mostly clear, with a low around 70.
Independence Day
 
A 40 percent chance of showers after 1pm. Partly sunny and hot, with a high near 93.
Saturday Night
 
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Sunday
 
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Sunday Night
 
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Monday
 
A 30 percent chance of showers. Partly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Lebanon ME.