Grass Island Weather Forecast

    • 49
    • 69

    Becoming Sunny

    • 40
    • 58

    Sunny

    • 50
    • 60

    Mostly Sunny

    • 54
    • 64

    Chance Rain

    • 54
    • 61

    Rain Likely

    • 55
    • 61

    Chance Rain

    • 55
    • 63

    Chance Rain

Today 8 Oct Southern New Haven

Partly sunny with a 20 percent chance of Showers. Near steady temperature in the mid 60s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 8 Oct Southern New Haven

Mostly clear. Much cooler with Lows in the mid 40s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Grass Island Temperature Statistics

October Temperature

Chester, Chester Airport (11.2 miles)

  • Lowest 2 October, 2025

    44.6 °F

  • Average October

    61.5 °F

  • Highest 5 October, 2025

    84.2 °F

Climate (2020–Present)

Chester, Chester Airport (11.2 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    62.7 °F
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