Hampton Harbor - Knowles Island Weather Forecast

    • 65
    • 77

    Rain Showers

    • 61
    • 83

    Chance Thunderstorms

    • 58
    • 78

    Mostly Sunny

    • 60
    • 77

    Mostly Sunny

    • 61
    • 74

    Partly Sunny

    • 64
    • 75

    Partly Sunny

Today 21 Jul Coastal Rockingham

Mostly cloudy. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 21 Jul Coastal Rockingham

Showers with a chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Patchy fog. Humid with Lows in the mid 60s. South Winds around 10 Mph. Gusts up to 25 Mph in the evening. Chance of rain near 100 percent.

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Hampton Harbor - Knowles Island Temperature Statistics

July Temperature

Pease Air Force Base / Portsmouth (13 miles)

  • Lowest 18 July, 2026

    59.2 °F

  • Average July

    76 °F

  • Highest 2 July, 2026

    95.9 °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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