HTTP/1.1 200 OK Server: Apache X-Content-Type-Options: nosniff X-XSS-Protection: 1; mode=block Content-Security-Policy: default-src 'none'; style-src 'self' code.jquery.com *.arcgis.com cdn.jsdelivr.net 'unsafe-inline'; script-src-elem 'self' https://*.weather.gov cdn.gov.cfigroup.com *.digitalgov.gov *.google-analytics.com *.arcgis.com code.jquery.com www.googletagmanager.com s.go-mpulse.net 'unsafe-inline'; img-src 'self' data: *.ncep.noaa.gov *.noaa.gov *.weather.gov *.arcgisonline.com *.arcgis.com maps.google.com; connect-src 'self' *.google-analytics.com *.arcgis.com opengeo.ncep.noaa.gov *.weather.gov; font-src 'self' cdn.jsdelivr.net; script-src 'unsafe-eval' 'unsafe-inline' Referrer-Policy: strict-origin-when-cross-origin Strict-Transport-Security: max-age=31536000; includeSubdomains; preload; Access-Control-Allow-Origin: * Content-Type: text/html; charset=UTF-8 Cache-Control: max-age=900 Expires: Fri, 05 Dec 2025 08:15:16 GMT Date: Fri, 05 Dec 2025 08:00:16 GMT Transfer-Encoding: chunked Connection: keep-alive Connection: Transfer-Encoding National Weather Service
National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 43.07°N 70.78°W (Text-Only)
NWS Forecast for: Portsmouth NH
Issued by: National Weather Service Gray/Portland, ME
Last Update: 12:38 am EST Dec 5, 2025		Print

  • Overnight

    Overnight: Mostly clear, with a low around 10. Wind chill values as low as -1. West wind 5 to 10 mph.

    Low: 10 °F

    Mostly Clear



  • Friday

    Friday: Sunny, with a high near 26. West wind around 5 mph becoming southwest in the afternoon.

    High: 26 °F

    Sunny



  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 15. Calm wind.

    Low: 15 °F

    Partly Cloudy



  • Saturday

    Saturday: A chance of snow showers, mixing with rain after 1pm, then gradually ending. Mostly cloudy, with a high near 37. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 37 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 23. West wind around 5 mph.

    Low: 23 °F

    Partly Cloudy



  • Sunday

    Sunday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny



  • Sunday
    Night

    Sunday Night: A 50 percent chance of snow after 10pm. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Chance Snow



  • Monday

    Monday: A 30 percent chance of snow before 7am. Mostly sunny, with a high near 26.

    High: 26 °F

    Chance Snow
    then Sunny


  • Monday
    Night

    Monday Night: Mostly clear, with a low around 6.

    Low: 6 °F

    Mostly Clear



    • Overnight: Mostly clear, with a low around 10. Wind chill values as low as -1. West wind 5 to 10 mph.

    Friday: Sunny, with a high near 26. West wind around 5 mph becoming southwest in the afternoon.

    Friday Night: Partly cloudy, with a low around 15. Calm wind.

    Saturday: A chance of snow showers, mixing with rain after 1pm, then gradually ending. Mostly cloudy, with a high near 37. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%.

    Saturday Night: Partly cloudy, with a low around 23. West wind around 5 mph.

    Sunday: Partly sunny, with a high near 37.

    Sunday Night: A 50 percent chance of snow after 10pm. Mostly cloudy, with a low around 17.

    Monday: A 30 percent chance of snow before 7am. Mostly sunny, with a high near 26.

    Monday Night: Mostly clear, with a low around 6.

    Tuesday: Partly sunny, with a high near 31.

    Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 22.

    Wednesday: Mostly cloudy, with a high near 44.

    Wednesday Night: Rain likely. Cloudy, with a low around 32. Chance of precipitation is 60%.

    Thursday: A 40 percent chance of rain. Mostly cloudy, with a high near 42.


    Portsmouth NH
     43.07°N 70.78°W (Elev. 33 ft)

    Visit your local NWS office at: https://www.weather.gov/gyx/