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    Next 5 Days
    • Tonight

      Sep 29

      50° Lo
      Mostly cloudy and breezy
      More
    • Fri

      Sep 30

      60° /51°F
      Low clouds and breezy
    • Sat

      Oct 1

      56° /51°
      Cloudy with spotty showers
      More
    • Sun

      Oct 2

      59° /54°
      Cloudy, a shower in the p.m.
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    • Mon

      Oct 3

      62° /54°
      Cloudy with a shower in spots
      More
    53°/51° RealFeel® 52°/47°
    A brief shower or two
    • 6 mph
    • Precipitation: 55%
    • Rain: 0.02 in
    • Snow: 0 in
    • Humidity: 84%
    • Cloud Cover: 99%
    • Dew Point: 48° F
    • Visibility: 9 mi

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 60° 67° 84° (1986) 72°
    Low 51° 44° 21° (1941) 55°

    Sunrise/Sunset

    • Sunrise: 6:40 AM
    • Sunset: 6:25 PM
    • Duration: 11:45 hr

    Moonrise/Moonset

    • Moonrise: 6:08 AM
    • Moonset: 6:29 PM
    • Duration: 12:21 hr
    Astronomy

    Portsmouth Weather Report

    Persistent rain to raise flood risk in part of northeastern US

    September 29, 2016; 8:33 PM ET

    Persistent downpours will raise the flood risk in part of the mid-Atlantic into Friday, while rain will spread over the balance of the northeastern United States into the weekend. More >