Piscataqua River - Pierce Island Weather Forecast

    • 50
    • 73

    Partly Sunny

    • 54
    • 72

    Slight Chance Rain Showers

    • 58
    • 77

    Partly Sunny

    • 47
    • 77

    Mostly Sunny

    • 44
    • 67

    Mostly Sunny

    • 51
    • 71

    Partly Sunny

Today 16 Sep Coastal Rockingham

Patchy fog this morning. Partly sunny. Highs in the lower 70s. Light and variable Winds.

Tonight 16 Sep Coastal Rockingham

Partly cloudy. Patchy fog after midnight. Lows in the lower 50s. Light and variable Winds.

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Piscataqua River - Pierce Island Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 9 September, 2025

    47.3 °F

  • Average September

    64.1 °F

  • Highest 6 September, 2025

    82.6 °F

Climate (2020–Present)

Pease Air Force Base / Portsmouth (3.1 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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