Hampton Harbor - Knowles Island Weather Forecast

    • 62
    • 71

    Rain Showers

    • 50
    • 73

    Mostly Sunny

    • 51
    • 63

    Partly Sunny

    • 53
    • 62

    Rain Showers Likely

    • 52
    • 62

    Partly Sunny

    • 51
    • 60

    Mostly Sunny

Today 17 Sep Coastal Rockingham

Partly sunny this Morning, then mostly cloudy with a chance of Showers this afternoon. Highs in the lower 70s. Light and variable Winds. Chance of rain 40 percent.

Tonight 17 Sep Coastal Rockingham

A slight chance of Thunderstorms. Showers. Patchy fog. Humid with Lows in the lower 60s. Light and variable Winds. Chance of rain 90 percent.

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Hampton Harbor - Knowles Island Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (13 miles)

  • Lowest 15 September, 2026

    45.1 °F

  • Average September

    65.8 °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

    50.7 °F

  • Average High 2021–2026

    59.2 °F
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