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

58°F

14°C

Humidity 81%
Wind Speed W 7 mph
Barometer 29.98 in (1015.5 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 4 Apr 3:55 am EDT
Extended Forecast for

New Castle NH

  • Today

    Today: Mostly sunny, with a high near 51. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers, mainly after 5am. Low around 36. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Slight Chance
    Showers then
    Showers

  • Sunday

    Sunday: Showers. Patchy dense fog before 1pm. High near 54. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Showers and
    Patchy Dense
    Fog

  • Sunday Night

    Sunday Night: A 50 percent chance of showers before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 36. West wind around 5 mph.

    Low: 36 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 49. West wind around 10 mph, with gusts as high as 20 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow showers before 11am, then a chance of rain and snow showers between 11am and 5pm, then a chance of rain showers after 5pm. Partly sunny, with a high near 44. Chance of precipitation is 50%.

    High: 44 °F

    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers before 9pm. Partly cloudy, with a low around 25.

    Low: 25 °F

    Chance Snow
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 51. Northwest wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Tonight
Showers, mainly after 5am. Low around 36. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers. Patchy dense fog before 1pm. High near 54. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 50 percent chance of showers before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 36. West wind around 5 mph.
Monday
Mostly sunny, with a high near 49. West wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
A chance of snow showers before 11am, then a chance of rain and snow showers between 11am and 5pm, then a chance of rain showers after 5pm. Partly sunny, with a high near 44. Chance of precipitation is 50%.
Tuesday Night
A 30 percent chance of snow showers before 9pm. Partly cloudy, with a low around 25.
Wednesday
Sunny, with a high near 42.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Castle NH
 43.07°N 70.72°W (Elev. 26 ft)
Last Update:
2:31 am EDT Apr 4, 2026
Forecast Valid:
4am EDT Apr 4, 2026-6pm EDT Apr 10, 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