National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Mostly Cloudy

73°F

23°C

Humidity 87%
Wind Speed SW 5 mph
Barometer 29.88 in (1012.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 1 Jul 6:55 am EDT
Extended Forecast for

New Castle NH

Extreme Heat Warning July 1, 11:00am until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Mostly sunny and hot, with a high near 93. Heat index values as high as 103. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 75. Southwest wind around 5 mph.

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Heat index values as high as 111. West wind around 5 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. West wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. West wind around 5 mph.

    High: 99 °F

    Hot

  • Friday Night

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

    Low: 73 °F

    Mostly Clear

  • Independence Day

    Independence Day: A 30 percent chance of showers after 4pm. Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 3pm. Partly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Mostly sunny and hot, with a high near 93. Heat index values as high as 103. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 75. Southwest wind around 5 mph.
Thursday
Sunny and hot, with a high near 99. Heat index values as high as 111. West wind around 5 mph.
Thursday Night
Mostly clear, with a low around 76. West wind around 5 mph.
Friday
Sunny and hot, with a high near 99. West wind around 5 mph.
Friday Night
Mostly clear, with a low around 73.
Independence Day
A 30 percent chance of showers after 4pm. Mostly sunny and hot, with a high near 95.
Saturday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers after 3pm. Partly sunny, with a high near 83.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 64.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 79.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Castle NH
 43.05°N 70.75°W (Elev. 13 ft)
Last Update:
6:39 am EDT Jul 1, 2026
Forecast Valid:
7am EDT Jul 1, 2026-6pm EDT Jul 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation