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

84°F

29°C

Humidity 39%
Wind Speed W 8 mph
Barometer 29.82 in (1010.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Aug 5:55 pm EDT
Extended Forecast for

New Castle NH

  • Tonight

    Tonight: Partly cloudy, with a low around 66. South wind 5 to 10 mph becoming west after midnight.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 74. Northwest wind around 5 mph becoming east in the afternoon.

    High: 74 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 63. South wind around 5 mph becoming northwest after midnight. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 70. North wind around 5 mph becoming east in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 5pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before 11pm. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. South wind 5 to 10 mph becoming west after midnight.
Thursday
Increasing clouds, with a high near 74. Northwest wind around 5 mph becoming east in the afternoon.
Thursday Night
A 30 percent chance of showers, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 63. South wind around 5 mph becoming northwest after midnight. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 70. North wind around 5 mph becoming east in the afternoon.
Friday Night
Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 69.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 63.
Sunday
Showers likely, mainly after 5pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of showers before 11pm. Mostly cloudy, with a low around 63.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 76.
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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:
6:00 pm EDT Aug 19, 2026
Forecast Valid:
6pm EDT Aug 19, 2026-6pm EDT Aug 26, 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