National Weather Service Forecast for: Londonderry NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 1:37 am EDT Apr 6, 2026
 
Overnight

Overnight: Mostly clear, with a low around 33. West wind around 10 mph.
Mostly Clear

 Monday

Monday: Increasing clouds, with a high near 49. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Increasing
Clouds and
Breezy
 Monday
Night
Monday Night: Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Partly Cloudy

 Tuesday

Tuesday: A chance of snow before 9am, then a chance of rain and snow between 9am and 10am, then a chance of rain after 10am. Partly sunny, with a high near 44. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Chance
Rain/Snow
then Chance
Rain
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 22. Northwest wind 5 to 10 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 48.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 26.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 56.
Mostly Sunny

 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 34.
Mostly Cloudy
Lo 33 °F Hi 49 °F Lo 28 °F Hi 44 °F Lo 22 °F Hi 48 °F Lo 26 °F Hi 56 °F Lo 34 °F

 

Overnight
 
 Mostly clear, with a low around 33. West wind around 10 mph.
Monday
 
 Increasing clouds, with a high near 49. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Monday Night
 
 Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
 
 A chance of snow before 9am, then a chance of rain and snow between 9am and 10am, then a chance of rain after 10am. Partly sunny, with a high near 44. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Tuesday Night
 
 Mostly clear, with a low around 22. Northwest wind 5 to 10 mph.
Wednesday
 
 Sunny, with a high near 48.
Wednesday Night
 
 Mostly clear, with a low around 26.
Thursday
 
 Mostly sunny, with a high near 56.
Thursday Night
 
 Mostly cloudy, with a low around 34.
Friday
 
 Partly sunny, with a high near 66.
Friday Night
 
 Mostly cloudy, with a low around 46.
Saturday
 
 Sunny, with a high near 67.
Saturday Night
 
 Mostly clear, with a low around 38.
Sunday
 
 Mostly sunny, with a high near 63.

 

Forecast from NOAA-NWS for Londonderry NH.