National Weather Service Forecast for: Windham NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 10:26 pm EDT Jun 18, 2026
 
Tonight

Tonight: Mostly clear, with a low around 59. West wind around 10 mph, with gusts as high as 20 mph.
Mostly Clear

 Juneteenth

Juneteenth: Sunny, with a high near 80. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Sunny then
Sunny and
Breezy
 Friday
Night
Friday Night: Clear, with a low around 58. West wind around 10 mph, with gusts as high as 20 mph.
Clear

 Saturday

Saturday: Mostly sunny, with a high near 77. West wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 57. West wind around 5 mph.
Partly Cloudy

 Sunday

Sunday: A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 79.
Mostly Sunny
then Chance
Showers
 Sunday
Night
Sunday Night: A 30 percent chance of showers before 9pm. Partly cloudy, with a low around 55.
Chance
Showers then
Partly Cloudy
 Monday

Monday: A 50 percent chance of showers after 10am. Partly sunny, with a high near 77.
Chance
Showers
 Monday
Night
Monday Night: Showers likely. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Showers
Likely
Lo 59 °F Hi 80 °F Lo 58 °F Hi 77 °F Lo 57 °F Hi 79 °F Lo 55 °F Hi 77 °F Lo 57 °F

 

Tonight
 
 Mostly clear, with a low around 59. West wind around 10 mph, with gusts as high as 20 mph.
Juneteenth
 
 Sunny, with a high near 80. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
 
 Clear, with a low around 58. West wind around 10 mph, with gusts as high as 20 mph.
Saturday
 
 Mostly sunny, with a high near 77. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
 
 Partly cloudy, with a low around 57. West wind around 5 mph.
Sunday
 
 A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 79.
Sunday Night
 
 A 30 percent chance of showers before 9pm. Partly cloudy, with a low around 55.
Monday
 
 A 50 percent chance of showers after 10am. Partly sunny, with a high near 77.
Monday Night
 
 Showers likely. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Tuesday
 
 A 40 percent chance of showers before 1pm. Partly sunny, with a high near 80.
Tuesday Night
 
 Partly cloudy, with a low around 58.
Wednesday
 
 Sunny, with a high near 83.
Wednesday Night
 
 Partly cloudy, with a low around 58.
Thursday
 
 A 30 percent chance of showers. Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for Windham NH.