Hampton Harbor - Knowles Island Weather Forecast

    • 59
    • 85

    Decreasing Clouds

    • 51
    • 74

    Sunny

    • 62
    • 72

    Chance Rain Showers

    • 62
    • 76

    Chance Rain Showers

    • 54
    • 72

    Mostly Sunny

    • 60
    • 69

    Partly Sunny

    • 61
    • 78

    Slight Chance Rain Showers

Today 10 Sep Coastal Rockingham

Mostly sunny. Warm with Highs in the mid 80s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 10 Sep Coastal Rockingham

Partly cloudy. Lows in the upper 50s. West Winds 10 to 15 Mph with Gusts up to 30 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hampton Harbor - Knowles Island Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (13 miles)

  • Lowest 7 September, 2026

    54.5 °F

  • Average September

    66.4 °F

  • Highest 4 September, 2026

    82.8 °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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