Hampton Harbor - Knowles Island Weather Forecast

    • 54
    • 61

    Rain

    • 54
    • 60

    Rain

    • 53
    • 58

    Rain

    • 55
    • 64

    Mostly Cloudy

    • 56
    • 68

    Partly Sunny

    • 58
    • 70

    Partly Sunny

Today 26 Sep Coastal Rockingham

Rain with a slight chance of Thunderstorms. Highs in the lower 60s. Northeast Winds 15 to 20 Mph with Gusts up to 40 Mph. Chance of rain near 100 percent.

Tonight 26 Sep Coastal Rockingham

A slight chance of Thunderstorms in the evening. Rain. Lows in the lower 50s. Northeast Winds 20 to 25 Mph with Gusts up to 45 Mph. Chance of rain near 100 percent.

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Hampton Harbor - Knowles Island Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (13 miles)

  • Lowest 20 September, 2026

    42.8 °F

  • Average September

    63.5 °F

  • Highest 10 September, 2026

    86.5 °F

Climate (2021–2026)

Pease Air Force Base / Portsmouth (13 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    59.1 °F
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