National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Fog/Mist

19°C

66°F

Humidity 94%
Wind Speed SE 15 km/h
Barometer 1018.8 mb (30.08 in)
Dewpoint 18°C (64°F)
Visibility 2.41 km
Last update 13 Jul 8:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly cloudy, with a low around 18. South wind 5 to 10 km/h.

    Low: 18 °C

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 28. South wind around 10 km/h. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    High: 28 °C

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 20. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    Low: 20 °C

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 31. West wind 5 to 10 km/h becoming south in the afternoon.

    High: 31 °C

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. Calm wind.

    Low: 20 °C

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 32.

    High: 32 °C

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22.

    Low: 22 °C

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 32.

    High: 32 °C

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 18. South wind 5 to 10 km/h.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 28. South wind around 10 km/h. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 20. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 31. West wind 5 to 10 km/h becoming south in the afternoon.
Tuesday Night
Mostly clear, with a low around 20. Calm wind.
Wednesday
Mostly sunny and hot, with a high near 32.
Wednesday Night
Partly cloudy, with a low around 22.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 32.
Thursday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 21.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 31.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 19.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 18.
Sunday
Partly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 m)
Last Update:
8:11 pm EDT Jul 13, 2025
Forecast Valid:
9pm EDT Jul 13, 2025-6pm EDT Jul 20, 2025
 
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