National Weather Service Forecast for: Lebanon NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 7:05 pm EDT Sep 12, 2026
 
Tonight

Tonight: A slight chance of showers between 1am and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 58. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Cloudy
then Chance
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm before noon, then a slight chance of showers between noon and 2pm. Patchy fog before noon. High near 73. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers and
Patchy Fog
then Slight
Chance
Showers
 Sunday
Night
Sunday Night: A 50 percent chance of showers after 2am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Calm wind becoming west around 5 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.
Patchy Fog
then Chance
Showers and
Patchy Fog
 Monday

Monday: Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 66. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Patchy Fog
then Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 42. Northwest wind around 5 mph becoming calm in the evening.
Mostly Clear


 Tuesday

Tuesday: Sunny, with a high near 71.
Sunny


 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 52.
Partly Cloudy


 Wednesday

Wednesday: Mostly sunny, with a high near 78.
Mostly Sunny


 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 58.
Partly Cloudy
Lo 58 °F Hi 73 °F Lo 55 °F Hi 66 °F Lo 42 °F Hi 71 °F Lo 52 °F Hi 78 °F Lo 58 °F

 

Tonight
 
 A slight chance of showers between 1am and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 58. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 Showers and possibly a thunderstorm before noon, then a slight chance of showers between noon and 2pm. Patchy fog before noon. High near 73. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 A 50 percent chance of showers after 2am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Calm wind becoming west around 5 mph after midnight. New precipitation amounts of less than a tenth of an inch possible.
Monday
 
 Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 66. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
 
 Mostly clear, with a low around 42. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
 
 Sunny, with a high near 71.
Tuesday Night
 
 Partly cloudy, with a low around 52.
Wednesday
 
 Mostly sunny, with a high near 78.
Wednesday Night
 
 Partly cloudy, with a low around 58.
Thursday
 
 A 30 percent chance of showers after 1pm. Partly sunny, with a high near 77.
Thursday Night
 
 A 50 percent chance of showers. Mostly cloudy, with a low around 58.
Friday
 
 Partly sunny, with a high near 72.
Friday Night
 
 Partly cloudy, with a low around 50.
Saturday
 
 Partly sunny, with a high near 68.

 

Forecast from NOAA-NWS for Lebanon NH.