National Weather Service Forecast for: Atkinson NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 6:11 am EDT Jun 30, 2026
 
Today

Today: Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.
Mostly Sunny

 Tonight

Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers after 2am. Partly cloudy, with a low around 68. Southwest wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers
 Wednesday

Wednesday: Mostly sunny and hot, with a high near 97. Heat index values as high as 107. Southwest wind around 5 mph.
Hot

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 76. Southwest wind around 5 mph.
Mostly Clear

 Thursday

Thursday: Sunny and hot, with a high near 100. West wind around 5 mph.
Hot

 Thursday
Night
Thursday Night: Clear, with a low around 77.
Clear

 Friday

Friday: Sunny and hot, with a high near 101.
Hot

 Friday
Night
Friday Night: Mostly clear, with a low around 73.
Mostly Clear

 Independence
Day
Independence Day: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
Mostly Sunny
then Chance
T-storms
Hi 89 °F Lo 68 °F Hi 97 °F Lo 76 °F Hi 100 °F Lo 77 °F Hi 101 °F Lo 73 °F Hi 95 °F

Extreme Heat Watch
 

Today
 
 Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.
Tonight
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers after 2am. Partly cloudy, with a low around 68. Southwest wind around 5 mph. Chance of precipitation is 40%. 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 97. Heat index values as high as 107. Southwest wind around 5 mph.
Wednesday Night
 
 Mostly clear, with a low around 76. Southwest wind around 5 mph.
Thursday
 
 Sunny and hot, with a high near 100. West wind around 5 mph.
Thursday Night
 
 Clear, with a low around 77.
Friday
 
 Sunny and hot, with a high near 101.
Friday Night
 
 Mostly clear, with a low around 73.
Independence Day
 
 A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
Saturday Night
 
 A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 10pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Sunday
 
 Mostly sunny and hot, with a high near 90.
Sunday Night
 
 Partly cloudy, with a low around 66.
Monday
 
 Mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Atkinson NH.