Piscataqua River - Four Tree Island Weather Forecast

    • 71
    • 87

    Partly Sunny

    • 70
    • 86

    Chance Rain Showers

    • 68
    • 87

    Chance Rain Showers

    • 66
    • 89

    Mostly Sunny

    • 67
    • 88

    Chance Rain Showers

    • 63
    • 84

    Chance Rain Showers

Today 6 Aug Coastal Rockingham

Partly sunny. Warm with Highs in the upper 80s. Light and variable Winds, becoming south around 10 Mph in the afternoon. Heat index Values in the mid 90s in the afternoon.

Tonight 6 Aug Coastal Rockingham

Partly cloudy in the Evening, then becoming mostly clear. Patchy fog after midnight. Humid with Lows in the lower 70s. Light and variable Winds. Heat index Values in the mid 90s early in the evening.

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Piscataqua River - Four Tree Island Temperature Statistics

August Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 1 August, 2026

    66.6 °F

  • Average August

    75 °F

  • Highest 2 August, 2026

    86.2 °F

Climate (2021–2026)

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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