Piscataqua River - Four Tree Island Weather Forecast

    • 24
    • 36

    Partly Sunny

    • 27
    • 39

    Partly Sunny

    • 30
    • 49

    Chance Rain/Snow

    • 30
    • 45

    Chance Rain/Snow

    • 30
    • 49

    Chance Rain/Snow

    • 21
    • 44

    Mostly Cloudy

Today 18 Mar Coastal Rockingham

Mostly sunny. Highs in the mid 30s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 18 Mar Coastal Rockingham

Partly cloudy. Lows in the mid 20s. Southeast Winds around 10 Mph in the Evening, becoming light and variable.

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Piscataqua River - Four Tree Island Temperature Statistics

March Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 2 March, 2026

    7.9 °F

  • Average March

    36.9 °F

  • Highest 10 March, 2026

    72.7 °F

Climate (2021–Present)

Pease Air Force Base / Portsmouth (3.1 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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