10-Day Weather Forecast - Portsmouth, NH

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  • |40°F
    70% Chance of Rain
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    Tonight

    40°F

    Partly cloudy this evening then cloudy with rain likely after midnight. Areas of fog after midnight. Lows in the upper 30s. Southeast winds around 10 mph with gusts up to 25 mph. Chance of rain 70 percent.

    Hourly details
  • Day

    55°F

    Rain. Areas of fog in the morning. Patchy fog in the afternoon. Windy with highs in the mid 50s. South winds 20 to 30 mph with gusts up to 50 mph. Chance of rain near 100 percent.

    Night

    28°F

    Partly cloudy. A slight chance of rain in the evening. Lows in the mid 20s. West winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 20 percent.

    Hourly details
  • Weekend Weather

  • Day

    36°F

    Partly sunny. Highs in the upper 30s. West winds 15 to 20 mph with gusts up to 35 mph diminishing to around 10 mph with gusts up to 25 mph in the afternoon.

    Night

    34°F

    Cloudy. Lows in the upper 20s. Southwest winds around 10 mph with gusts up to 20 mph.

    Hourly details
  • Day

    42°F

    Partly sunny. Highs in the mid 40s.

    Night

    22°F

    Partly cloudy. Lows around 20.

    Hourly details
  • Day

    28°F

    Mostly sunny. Highs in the upper 20s.

    Night

    25°F

    Mostly clear in the evening then becoming partly cloudy. Lows 15 to 20.

    Hourly details
  • Day

    35°F

    Partly sunny in the morning then becoming mostly cloudy. A chance of snow. Highs in the mid 30s. Chance of snow 50 percent.

    Night

    31°F

    Mostly cloudy with a chance of snow and rain in the evening then partly cloudy after midnight. Lows in the mid 20s. Chance of precipitation 50 percent.

    Hourly details
  • Day

    31°F

    Mostly sunny. Highs in the upper 30s.

    Night

    20°F

    Partly cloudy. Lows around 20.

    Hourly details
  • Day

    35°F

    Partly sunny in the morning then mostly cloudy with a chance of snow and rain in the afternoon. Highs in the mid 30s. Chance of precipitation 30 percent.

    Night

    34°F

    Cloudy with a chance of rain. Chance of precipitation 50%. Low temperature around 34F. Dew point will be around 33F with an average humidity of 88%. Winds will be 2 mph from the SW.

  • Day

    42°F

    Cloudy with a chance of rain. Chance of precipitation 55%. High temperature around 42F. Dew point will be around 37F with an average humidity of 90%. Winds will be 3 mph from the W.

    Night

    32°F

    Partly cloudy with a slight chance of rain-snow mix. Chance of precipitation 30%. Low temperature around 32F. Dew point will be around 32F with an average humidity of 87%. Winds will be 5 mph from the W.

  • Weekend Weather

  • Day

    37°F

    Mostly sunny with a slight chance of rain-snow mix. Chance of precipitation 25%. High temperature around 37F. Dew point will be around 28F with an average humidity of 78%. Winds will be 5 mph from the W.

    Night

    29°F

    Partly cloudy. Low temperature around 29F. Dew point will be around 26F with an average humidity of 79%. Winds will be 5 mph from the NW.