Foss Beach Weather Forecast

    • 58
    • 72

    Partly Sunny

    • 58
    • 69

    Mostly Sunny

    • 57
    • 67

    Mostly Sunny

    • 58
    • 69

    Mostly Sunny

    • 59
    • 70

    Partly Sunny

    • 61
    • 69

    Partly Sunny

    • 58
    • 72

    Mostly Sunny

Today 13 Sep Coastal Rockingham

Partly sunny with isolated Showers. Highs in the lower 70s. Southeast Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 13 Sep Coastal Rockingham

Partly cloudy. Isolated Showers in the evening. Lows in the mid 50s. South Winds around 10 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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Foss Beach Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (6.2 miles)

  • Lowest 9 September, 2025

    47.3 °F

  • Average September

    64.6 °F

  • Highest 6 September, 2025

    82.6 °F

Climate (2020–Present)

Pease Air Force Base / Portsmouth (6.2 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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