National Weather Service Forecast for: Claremont NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 2:26 am EDT Jun 30, 2026
 
Today

Today: Mostly sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph.
Hot

 Tonight

Tonight: A 50 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 68. South wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Slight Chance
T-storms
 Wednesday

Wednesday: Mostly sunny and hot, with a high near 95. Heat index values as high as 107. West wind around 5 mph.
Hot

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm.
Partly Cloudy

 Thursday

Thursday: Sunny and hot, with a high near 98. Calm wind becoming west around 5 mph in the morning.
Hot

 Thursday
Night
Thursday Night: Mostly clear, with a low around 75.
Mostly Clear

 Friday

Friday: Sunny and hot, with a high near 98.
Hot

 Friday
Night
Friday Night: Mostly clear, with a low around 70.
Mostly Clear

 Independence
Day
Independence Day: A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 92. Chance of precipitation is 40%.
Mostly Sunny
then Chance
T-storms
Hi 90 °F Lo 68 °F Hi 95 °F Lo 74 °F Hi 98 °F Lo 75 °F Hi 98 °F Lo 70 °F Hi 92 °F

Extreme Heat Watch
 

Today
 
 Mostly sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph.
Tonight
 
 A 50 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 68. South wind around 5 mph. New rainfall 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 107. West wind around 5 mph.
Wednesday Night
 
 Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm.
Thursday
 
 Sunny and hot, with a high near 98. Calm wind becoming west around 5 mph in the morning.
Thursday Night
 
 Mostly clear, with a low around 75.
Friday
 
 Sunny and hot, with a high near 98.
Friday Night
 
 Mostly clear, with a low around 70.
Independence Day
 
 A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 92. Chance of precipitation is 40%.
Saturday Night
 
 A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Sunday
 
 Mostly sunny and hot, with a high near 90.
Sunday Night
 
 Partly cloudy, with a low around 64.
Monday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

 

Forecast from NOAA-NWS for Claremont NH.