National Weather Service Forecast for: Windham NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 2:35 pm EDT Jul 28, 2026
 
This
Afternoon
This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a high near 80. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Tonight

Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 63. South wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Slight Chance
Showers
 Wednesday

Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Cloudy, with a high near 75. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Chance
Showers then
Showers
Likely
 Wednesday
Night
Wednesday Night: Showers. Low around 57. Northeast wind around 10 mph. Chance of precipitation is 80%.
Showers

 Thursday

Thursday: Showers. High near 71. Northeast wind around 10 mph. Chance of precipitation is 80%.
Showers

 Thursday
Night
Thursday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Showers
Likely then
Mostly Cloudy
 Friday

Friday: Mostly sunny, with a high near 79.
Mostly Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 59.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 82.
Sunny
Hi 80 °F Lo 63 °F Hi 75 °F Lo 57 °F Hi 71 °F Lo 57 °F Hi 79 °F Lo 59 °F Hi 82 °F

 

This Afternoon
 
 Showers likely and possibly a thunderstorm. Cloudy, with a high near 80. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 63. South wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Cloudy, with a high near 75. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
 
 Showers. Low around 57. Northeast wind around 10 mph. Chance of precipitation is 80%.
Thursday
 
 Showers. High near 71. Northeast wind around 10 mph. Chance of precipitation is 80%.
Thursday Night
 
 Showers likely, mainly before 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Friday
 
 Mostly sunny, with a high near 79.
Friday Night
 
 Mostly clear, with a low around 59.
Saturday
 
 Sunny, with a high near 82.
Saturday Night
 
 Partly cloudy, with a low around 62.
Sunday
 
 Partly sunny, with a high near 83.
Sunday Night
 
 A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Monday
 
 A 40 percent chance of showers. Partly sunny, with a high near 81.
Monday Night
 
 A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Tuesday
 
 Sunny, with a high near 83.

 

Forecast from NOAA-NWS for Windham NH.