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

43°F

6°C

Humidity 75%
Wind Speed Calm
Barometer 30.06 in (1018.2 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 13 May 4:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 61. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Chance
    Showers

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 48. South wind 5 to 10 mph.

    Low: 48 °F

    Cloudy then
    Patchy Fog

  • Thursday

    Thursday: Rain, with thunderstorms also possible after 2pm. Patchy fog between 7am and 8am. High near 58. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 58 °F

    Chance Rain
    and Patchy
    Fog then Rain

  • Thursday Night

    Thursday Night: Rain. Patchy fog after 9pm. Low around 45. Northeast wind around 5 mph. Chance of precipitation is 90%.

    Low: 45 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Rain, mainly before 1pm. Patchy fog before 11am. High near 56. Northeast wind around 5 mph. Chance of precipitation is 80%.

    High: 56 °F

    Rain and
    Patchy Fog

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 61. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 48. South wind 5 to 10 mph.
Thursday
Rain, with thunderstorms also possible after 2pm. Patchy fog between 7am and 8am. High near 58. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Patchy fog after 9pm. Low around 45. Northeast wind around 5 mph. Chance of precipitation is 90%.
Friday
Rain, mainly before 1pm. Patchy fog before 11am. High near 56. Northeast wind around 5 mph. Chance of precipitation is 80%.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 ft)
Last Update:
2:25 am EDT May 13, 2026
Forecast Valid:
5am EDT May 13, 2026-6pm EDT May 19, 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