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.

A Few Clouds

58°F

14°C

Humidity 26%
Wind Speed SW 5 mph
Barometer 29.91 in (1013.2 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 9 Mar 8:55 pm EDT
Extended Forecast for

New Castle NH

  • Tonight

    Tonight: Mostly clear, with a low around 38. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65. Southwest wind 5 to 10 mph.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 3am. Patchy fog. Otherwise, partly cloudy, with a low around 39. Southwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 39 °F

    Patchy Fog
    then Slight
    Chance Rain
    and Patchy
    Fog

  • Wednesday

    Wednesday: A 40 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 42. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 42 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Patchy fog. Otherwise, cloudy, with a low around 39. Southeast wind 5 to 10 mph becoming south 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 39 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: A 40 percent chance of rain. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 54.

    High: 54 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: A chance of rain and snow before 11pm. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of snow before 11pm, then rain and snow likely between 11pm and 5am, then rain likely after 5am. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain/Snow
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 65. Southwest wind 5 to 10 mph.
Tuesday Night
A 20 percent chance of rain after 3am. Patchy fog. Otherwise, partly cloudy, with a low around 39. Southwest wind 5 to 10 mph becoming light and variable after midnight.
Wednesday
A 40 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 42. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
A 50 percent chance of rain. Patchy fog. Otherwise, cloudy, with a low around 39. Southeast wind 5 to 10 mph becoming south 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Thursday
A 40 percent chance of rain. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 54.
Thursday Night
A chance of rain and snow before 11pm. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 41.
Friday Night
A chance of snow before 11pm, then rain and snow likely between 11pm and 5am, then rain likely after 5am. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain before 10am. Mostly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 46.
Sunday Night
Rain and snow likely. Cloudy, with a low around 37. Chance of precipitation is 70%.
Monday
Rain likely. Cloudy, with a high near 49. Breezy. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Castle NH
 43.02°N 70.73°W (Elev. 0 ft)
Last Update:
7:20 pm EDT Mar 9, 2026
Forecast Valid:
9pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation