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.

Light Rain Fog/Mist

8°C

47°F

Humidity 94%
Wind Speed N 11 km/h
Barometer 1013.5 mb (29.92 in)
Dewpoint 7°C (45°F)
Visibility 4.83 km
Wind Chill7°C (44°F)
Last update 13 Oct 5:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: A 40 percent chance of rain and thunderstorms, mainly before midnight. Areas of fog. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 13. Southeast wind 5 to 10 km/h becoming southwest after midnight. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Low: 13 °C

    Chance
    T-storms and
    Areas Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 24. West wind 10 to 15 km/h.

    High: 24 °C

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 7. Northwest wind around 10 km/h.

    Low: 7 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 16. Northwest wind 5 to 10 km/h.

    High: 16 °C

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 6. Calm wind.

    Low: 6 °C

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers, mainly after 8am. High near 16. Chance of precipitation is 100%.

    High: 16 °C

    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 3. Chance of precipitation is 70%.

    Low: 3 °C

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 8. Breezy.

    High: 8 °C

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around -1.

    Low: -1 °C

    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of rain and thunderstorms, mainly before midnight. Areas of fog. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 13. Southeast wind 5 to 10 km/h becoming southwest after midnight. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 24. West wind 10 to 15 km/h.
Wednesday Night
Mostly clear, with a low around 7. Northwest wind around 10 km/h.
Thursday
Sunny, with a high near 16. Northwest wind 5 to 10 km/h.
Thursday Night
A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 6. Calm wind.
Friday
Showers, mainly after 8am. High near 16. Chance of precipitation is 100%.
Friday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 3. Chance of precipitation is 70%.
Saturday
Mostly sunny, with a high near 8. Breezy.
Saturday Night
Mostly clear, with a low around -1.
Sunday
Sunny, with a high near 12.
Sunday Night
Mostly clear, with a low around 2.
Monday
Mostly sunny, with a high near 16.
Monday Night
Mostly cloudy, with a low around 6.
Tuesday
Mostly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.07°N 70.78°W (Elev. 33 m)
Last Update:
2:31 pm EDT Oct 13, 2026
Forecast Valid:
7pm EDT Oct 13, 2026-6pm EDT Oct 20, 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