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

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Mostly Cloudy

32°F

0°C

Humidity 63%
Wind Speed NW 14 mph
Barometer 30.34 in (1027.8 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 15 Mar 4:55 am EDT
Extended Forecast for

New Castle NH

  • Today

    Today: Partly sunny, with a high near 37. West wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.

    High: 37 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of rain after 3am. Increasing clouds, with a low around 34. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: Rain, with thunderstorms also possible after 2pm. High near 52. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 52 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 39. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%.

    Low: 39 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 45. West wind around 15 mph, with gusts as high as 30 mph.

    High: 45 °F

    Chance
    Showers then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 37.

    High: 37 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 37. West wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.
Tonight
A 20 percent chance of rain after 3am. Increasing clouds, with a low around 34. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Rain, with thunderstorms also possible after 2pm. High near 52. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain. Low around 39. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 45. West wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 45.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 30.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Castle NH
 43.07°N 70.72°W (Elev. 26 ft)
Last Update:
3:09 am EDT Mar 15, 2026
Forecast Valid:
5am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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