Piscataqua River - Four Tree Island Weather Forecast

    • 50
    • 63

    Rain Showers

    • 49
    • 74

    Becoming Sunny

    • 49
    • 70

    Mostly Sunny

    • 50
    • 70

    Partly Sunny

    • 50
    • 77

    Mostly Sunny

    • 47
    • 70

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

Today 7 Sep Coastal Rockingham

Showers likely. Highs in the lower 60s. Light and variable Winds. Chance of rain 70 percent.

Tonight 7 Sep Coastal Rockingham

Mostly cloudy with isolated Showers this Evening, then partly cloudy after midnight. Lows around 50. Light and variable Winds. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Piscataqua River - Four Tree Island Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 4 September, 2025

    53.2 °F

  • Average September

    66.8 °F

  • Highest 2 September, 2025

    78.3 °F

Climate (2020–Present)

Pease Air Force Base / Portsmouth (3.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    59.4 °F
Get WillyWeather+ to remove ads