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

55°F

13°C

Humidity 86%
Wind Speed E 9 mph
Barometer 29.94 in (1014.1 mb)
Dewpoint 51°F (11°C)
Visibility 7.00 mi
Wind Chill53°F (12°C)
Last update 15 Apr 11:55 am EDT
Extended Forecast for

New Castle NH

  • This Afternoon

    This Afternoon: Scattered showers, mainly after 5pm. Areas of fog between 1pm and 5pm. Otherwise, mostly cloudy, with a high near 55. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Scattered
    Showers and
    Areas Fog

  • Tonight

    Tonight: Scattered showers and thunderstorms, then showers likely after 3am. Areas of fog. Otherwise, cloudy, with a low around 44. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Showers
    Likely and
    Areas Fog

  • Thursday

    Thursday: Scattered showers, with thunderstorms also possible after 5pm. Areas of fog between noon and 2pm. Otherwise, mostly cloudy, with a high near 55. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Chance
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: Showers likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 46. Calm wind becoming northeast around 5 mph. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely, mainly after 11am. Mostly cloudy, with a high near 58. North wind around 5 mph. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before 10pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 5pm. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.

    High: 56 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Scattered showers, mainly after 5pm. Areas of fog between 1pm and 5pm. Otherwise, mostly cloudy, with a high near 55. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Scattered showers and thunderstorms, then showers likely after 3am. Areas of fog. Otherwise, cloudy, with a low around 44. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Scattered showers, with thunderstorms also possible after 5pm. Areas of fog between noon and 2pm. Otherwise, mostly cloudy, with a high near 55. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 46. Calm wind becoming northeast around 5 mph. Chance of precipitation is 60%.
Friday
Showers likely, mainly after 11am. Mostly cloudy, with a high near 58. North wind around 5 mph. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers before 10pm. Mostly cloudy, with a low around 44.
Saturday
Mostly cloudy, with a high near 51.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
Showers likely, mainly after 5pm. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly before 7pm. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 47.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Sunny, with a high near 51.
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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:
6:50 am EDT Apr 15, 2026
Forecast Valid:
12pm EDT Apr 15, 2026-6pm EDT Apr 21, 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