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

65°F

18°C

Humidity 69%
Wind Speed SW 7 mph
Barometer 29.78 in (1008.7 mb)
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 13 Apr 3:55 pm EDT
Extended Forecast for

Portsmouth NH

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 5pm. Mostly cloudy, with a high near 68. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 68 °F

    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 52. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 7pm and 3am. Patchy fog between 9pm and 1am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 50. South wind around 5 mph becoming southwest after midnight. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A 40 percent chance of showers after 1pm. Partly sunny, with a high near 71. West wind around 5 mph becoming southeast in the afternoon.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 59.

    High: 59 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers. Mostly cloudy, with a high near 67.

    High: 67 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 5pm. Mostly cloudy, with a high near 68. Southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 52. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 66. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Tuesday Night
A chance of showers between 7pm and 3am. Patchy fog between 9pm and 1am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 50. South wind around 5 mph becoming southwest after midnight. Chance of precipitation is 50%.
Wednesday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 71. West wind around 5 mph becoming southeast in the afternoon.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 59.
Thursday Night
A 40 percent chance of showers. Cloudy, with a low around 47.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 67.
Friday Night
A 30 percent chance of showers before 10pm. Mostly cloudy, with a low around 45.
Saturday
Mostly cloudy, with a high near 58.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 44.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 63.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 38.
Monday
Mostly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
2:20 pm EDT Apr 13, 2026
Forecast Valid:
4pm EDT Apr 13, 2026-6pm EDT Apr 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