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.

Partly Cloudy

89°F

32°C

Humidity 44%
Wind Speed SE 12 mph
Barometer 29.91 in (1013.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 30 Jul 3:55 pm EDT
Extended Forecast for

Portsmouth NH

  • Tonight

    Tonight: Partly cloudy, with a low around 65. Southeast wind around 5 mph becoming north after midnight.

    Low: 65 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 77. North wind around 5 mph becoming east in the afternoon. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 77 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly after 8pm. Cloudy, with a low around 58. East wind around 5 mph becoming northeast after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers before 4pm. Mostly cloudy, with a high near 69. Northeast wind 5 to 10 mph.

    High: 69 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. Northeast wind around 5 mph becoming calm.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 65. Southeast wind around 5 mph becoming north after midnight.
Thursday
A 30 percent chance of showers, mainly after 3pm. Mostly cloudy, with a high near 77. North wind around 5 mph becoming east in the afternoon. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Showers likely, mainly after 8pm. Cloudy, with a low around 58. East wind around 5 mph becoming northeast after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 40 percent chance of showers before 4pm. Mostly cloudy, with a high near 69. Northeast wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 56. Northeast wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 62.
Monday
Sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth NH
 43.05°N 70.78°W (Elev. 49 ft)
Last Update:
2:45 pm EDT Jul 30, 2025
Forecast Valid:
3pm EDT Jul 30, 2025-6pm EDT Aug 6, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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