Hammonasset Beach Weather Forecast

    • 64
    • 77

    Mostly Sunny

    • 69
    • 81

    Partly Sunny

    • 73
    • 84

    Mostly Sunny

    • 73
    • 89

    Slight Chance Rain Showers

    • 71
    • 85

    Chance Rain Showers

    • 69
    • 81

    Chance Thunderstorms

Today 22 Jul Southern New Haven

Sunny. Highs in the upper 70s. Northeast Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 22 Jul Southern New Haven

Mostly clear. Lows in the lower 60s. South Winds around 5 Mph, becoming southwest after midnight.

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Hammonasset Beach Temperature Statistics

July Temperature

Chester, Chester Airport (8.7 miles)

  • Lowest 4 July, 2025

    59 °F

  • Average July

    75.7 °F

  • Highest 8 July, 2025

    91.4 °F

Climate (2020–Present)

Chester, Chester Airport (8.7 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    62.7 °F
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