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.

Fair

33°F

1°C

Humidity 64%
Wind Speed Calm
Barometer 30.44 in (1031.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 12 Apr 5:55 am EDT
Extended Forecast for

Portsmouth NH

  • Today

    Today: Increasing clouds, with a high near 52. Northwest wind 5 to 10 mph becoming south in the afternoon.

    High: 52 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Rain. Low around 40. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain

  • Monday

    Monday: A chance of rain before 10am, then a chance of showers, mainly after 1pm. Mostly cloudy, with a high near 64. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance Rain

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 53. Southwest wind around 5 mph.

    Low: 53 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 70. West wind around 5 mph becoming south in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 52. Northwest wind 5 to 10 mph becoming south in the afternoon.
Tonight
Rain. Low around 40. South wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
A chance of rain before 10am, then a chance of showers, mainly after 1pm. Mostly cloudy, with a high near 64. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 53. Southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 70. West wind around 5 mph becoming south in the afternoon.
Tuesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 68.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 48.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 63.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 48.
Friday
Partly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 62.
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:
2:16 am EDT Apr 12, 2026
Forecast Valid:
6am EDT Apr 12, 2026-6pm EDT Apr 18, 2026
 
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