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.

A Few Clouds

56°F

13°C

Humidity 72%
Wind Speed E 3 mph
Barometer 30.54 in (1034.5 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 23 Sep 6:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Mostly clear, with a low around 46. North wind around 5 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 63. Northeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 49. North wind around 5 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Friday

    Friday: A 30 percent chance of showers after 4pm. Mostly cloudy, with a high near 64. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 64 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Rain likely, mainly after midnight. Cloudy, with a low around 52. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 52 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely. Mostly cloudy, with a high near 61. Breezy. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely
    and Breezy

  • Saturday Night

    Saturday Night: Rain. Low around 52. Chance of precipitation is 80%.

    Low: 52 °F

    Rain

  • Sunday

    Sunday: Rain. High near 61. Breezy. Chance of precipitation is 80%.

    High: 61 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain. Low around 51. Chance of precipitation is 80%.

    Low: 51 °F

    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 46. North wind around 5 mph.
Thursday
Sunny, with a high near 63. Northeast wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Increasing clouds, with a low around 49. North wind around 5 mph.
Friday
A 30 percent chance of showers after 4pm. Mostly cloudy, with a high near 64. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
Rain likely, mainly after midnight. Cloudy, with a low around 52. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Saturday
Rain likely. Mostly cloudy, with a high near 61. Breezy. Chance of precipitation is 70%.
Saturday Night
Rain. Low around 52. Chance of precipitation is 80%.
Sunday
Rain. High near 61. Breezy. Chance of precipitation is 80%.
Sunday Night
Rain. Low around 51. Chance of precipitation is 80%.
Monday
Showers likely, mainly before 11am. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 68.
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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:
6:28 pm EDT Sep 23, 2026
Forecast Valid:
7pm EDT Sep 23, 2026-6pm EDT Sep 30, 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