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.

Overcast

53°F

12°C

Humidity 86%
Wind Speed SE 7 mph
Barometer 29.96 in (1014.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 13 May 2:55 pm EDT
Extended Forecast for

Portsmouth NH

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Cloudy, with a high near 54. Southeast wind around 10 mph.

    High: 54 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 49. South wind 5 to 10 mph.

    Low: 49 °F

    Cloudy then
    Patchy Fog

  • Thursday

    Thursday: Rain and possibly a thunderstorm. Patchy fog. High near 59. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 59 °F

    Chance Rain
    and Patchy
    Fog then Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: Rain. Patchy fog. Low around 45. Northeast wind around 5 mph. Chance of precipitation is 100%.

    Low: 45 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Rain before 2pm, then showers likely, mainly between 2pm and 3pm. High near 55. Northeast wind 5 to 10 mph. Chance of precipitation is 90%.

    High: 55 °F

    Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Cloudy, with a high near 54. Southeast wind around 10 mph.
Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 49. South wind 5 to 10 mph.
Thursday
Rain and possibly a thunderstorm. Patchy fog. High near 59. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Patchy fog. Low around 45. Northeast wind around 5 mph. Chance of precipitation is 100%.
Friday
Rain before 2pm, then showers likely, mainly between 2pm and 3pm. High near 55. Northeast wind 5 to 10 mph. Chance of precipitation is 90%.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 51.
Monday
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
A chance of showers. Partly sunny, with a high near 75.
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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:
2:31 pm EDT May 13, 2026
Forecast Valid:
3pm EDT May 13, 2026-6pm EDT May 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