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.

Overcast

26°F

-3°C

Humidity 78%
Wind Speed NW 3 mph
Barometer 30.00 in (1016.3 mb)
Dewpoint 20°F (-7°C)
Visibility 7.00 mi
Last update 21 Feb 11:55 am EST
Extended Forecast for

New Castle NH

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 32. Northeast wind around 5 mph.

    High: 32 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 20. Calm wind becoming north around 5 mph after midnight.

    Low: 20 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after 4pm. Increasing clouds, with a high near 35. Northeast wind 5 to 10 mph.

    High: 35 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly after 2am. Cloudy, with a low around 23. Northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Chance Snow
    then Snow
    Likely

  • Monday

    Monday: Snow. High near 32. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.

    High: 32 °F

    Snow and
    Breezy

  • Monday Night

    Monday Night: Snow likely, mainly before 7pm. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.

    Low: 20 °F

    Snow Likely
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of snow after 3pm. Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

This Afternoon
Partly sunny, with a high near 32. Northeast wind around 5 mph.
Tonight
Partly cloudy, with a low around 20. Calm wind becoming north around 5 mph after midnight.
Sunday
A 20 percent chance of snow after 4pm. Increasing clouds, with a high near 35. Northeast wind 5 to 10 mph.
Sunday Night
Snow likely, mainly after 2am. Cloudy, with a low around 23. Northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday
Snow. High near 32. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of 5 to 9 inches possible.
Monday Night
Snow likely, mainly before 7pm. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 11.
Wednesday
A 30 percent chance of snow after 3pm. Partly sunny, with a high near 34.
Wednesday Night
A chance of snow before 10pm, then a chance of rain and snow between 10pm and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 42.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Friday
A 30 percent chance of rain. Mostly sunny, with a high near 39.
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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:
7:58 am EST Feb 21, 2026
Forecast Valid:
12pm EST Feb 21, 2026-6pm EST Feb 27, 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