National Weather Service Forecast for: Hollis NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 6:48 am EDT Jun 30, 2026
 
Today

Today: Mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.
Hot

 Tonight

Tonight: A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 68. Southwest 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 98. Heat index values as high as 110. West wind 5 to 10 mph.
Hot

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 77. Southwest wind around 5 mph.
Mostly Clear

 Thursday

Thursday: Sunny and hot, with a high near 100. West wind 5 to 10 mph.
Hot

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

 Friday

Friday: Sunny and hot, with a high near 100.
Hot

 Friday
Night
Friday Night: Mostly clear, with a low around 72.
Mostly Clear

 Independence
Day
Independence Day: A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 96.
Mostly Sunny
then Chance
T-storms
Hi 91 °F Lo 68 °F Hi 98 °F Lo 77 °F Hi 100 °F Lo 75 °F Hi 100 °F Lo 72 °F Hi 96 °F

Extreme Heat Watch
 

Today
 
 Mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
 
 A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 68. Southwest 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 98. Heat index values as high as 110. West wind 5 to 10 mph.
Wednesday Night
 
 Mostly clear, with a low around 77. Southwest wind around 5 mph.
Thursday
 
 Sunny and hot, with a high near 100. West wind 5 to 10 mph.
Thursday Night
 
 Clear, with a low around 75.
Friday
 
 Sunny and hot, with a high near 100.
Friday Night
 
 Mostly clear, with a low around 72.
Independence Day
 
 A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 96.
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 68. Chance of precipitation is 30%.
Sunday
 
 Mostly sunny and hot, with a high near 93.
Sunday Night
 
 Partly cloudy, with a low around 65.
Monday
 
 A 30 percent chance of showers. Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Hollis NH.