Hammonasset Beach Weather Forecast

    • 67
    • 78

    Chance Rain Showers

    • 55
    • 79

    Partly Sunny

    • 57
    • 68

    Partly Sunny

    • 56
    • 69

    Rain Showers Likely

    • 53
    • 68

    Chance Rain Showers

    • 52
    • 67

    Slight Chance Rain Showers

Today 17 Sep Southern New Haven

Partly sunny this Morning, then becoming mostly cloudy. Patchy fog this morning. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 17 Sep Southern New Haven

Mostly cloudy with a 50 percent chance of Showers. Humid with Lows in the mid 60s. South Winds 5 to 10 Mph, becoming southwest after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Hammonasset Beach Temperature Statistics

September Temperature

Chester, Chester Airport (8.7 miles)

  • Lowest 7 September, 2026

    53.6 °F

  • Average September

    69.3 °F

  • Highest 10 September, 2026

    86 °F

Climate (2021–2026)

Chester, Chester Airport (8.7 miles)

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

  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    62.6 °F
Get WillyWeather+ to remove ads