Hampton Harbor - Knowles Island Weather Forecast

    • 56
    • 75

    Mostly Sunny

    • 61
    • 75

    Chance Rain Showers

    • 65
    • 81

    Chance Rain Showers

    • 58
    • 82

    Chance Rain Showers

    • 53
    • 73

    Slight Chance Rain Showers

    • 52
    • 73

    Mostly Sunny

Today 3 Sep Coastal Rockingham

Mostly sunny. Highs in the upper 70s. Light and variable Winds, becoming southeast around 10 Mph this afternoon.

Tonight 3 Sep Coastal Rockingham

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Light and variable Winds.

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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 1 September, 2025

    54.5 °F

  • Average September

    65.7 °F

  • Highest 1 September, 2025

    77 °F

Climate (2020–Present)

Pease Air Force Base / Portsmouth (13 miles)

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  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    59.4 °F
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