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

83°F

28°C

Humidity 35%
Wind Speed SW 10 mph
Barometer 29.87 in (1011.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 24 Aug 3:55 pm EDT
Extended Forecast for

New Castle NH

  • Tonight

    Tonight: A 20 percent chance of showers before 9pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 59. Southwest wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 7am. Otherwise, sunny, with a high near 81. Southwest wind around 5 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. Calm wind becoming west around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63. South wind around 5 mph becoming calm.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after 5am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers. Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 9pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 59. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 7am. Otherwise, sunny, with a high near 81. Southwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 60. Calm wind becoming west around 5 mph.
Wednesday
Sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 63. South wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Showers likely, mainly after 5am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Castle NH
 43.07°N 70.75°W (Elev. 3 ft)
Last Update:
2:20 pm EDT Aug 24, 2026
Forecast Valid:
4pm EDT Aug 24, 2026-6pm EDT Aug 31, 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