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.

Mostly Cloudy

60°F

16°C

Humidity 73%
Wind Speed NE 10 mph
Barometer 29.90 in (1012.8 mb)
Dewpoint 51°F (11°C)
Visibility 7.00 mi
Last update 17 Apr 12:55 pm EDT
Extended Forecast for

Portsmouth NH

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 3pm. Partly sunny, with a high near 60. East wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Chance
    Showers

  • Tonight

    Tonight: Increasing clouds, with a low around 43. Calm wind becoming north around 5 mph.

    Low: 43 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 50. East wind 5 to 10 mph.

    High: 50 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 4am. Cloudy, with a low around 41. East wind around 5 mph becoming calm.

    Low: 41 °F

    Cloudy then
    Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 9am. High near 52. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 8pm. Low around 33. Chance of precipitation is 80%.

    Low: 33 °F

    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 3pm. Partly sunny, with a high near 60. East wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Increasing clouds, with a low around 43. Calm wind becoming north around 5 mph.
Saturday
Mostly cloudy, with a high near 50. East wind 5 to 10 mph.
Saturday Night
A 30 percent chance of showers after 4am. Cloudy, with a low around 41. East wind around 5 mph becoming calm.
Sunday
Showers, mainly after 9am. High near 52. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 8pm. Low around 33. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 48.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 57.
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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:
2:26 am EDT Apr 17, 2026
Forecast Valid:
1pm EDT Apr 17, 2026-6pm EDT Apr 23, 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