Grass Island Weather Forecast

    • 48
    • 57

    Breezy

    • 55
    • 67

    Partly Sunny

    • 52
    • 66

    Chance Rain Showers

    • 52
    • 64

    Chance Rain Showers

    • 54
    • 64

    Slight Chance Rain Showers

    • 59
    • 73

    Mostly Sunny

Today 30 May Southern New Haven

Mostly cloudy and Breezy, cooler with Highs in the upper 50s. North Winds 15 to 25 Mph with Gusts up to 40 Mph.

Tonight 30 May Southern New Haven

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 40s. North Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming northwest around 5 Mph after midnight.

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  • Temperature Real-Time

Grass Island Temperature Statistics

May Temperature

Chester, Chester Airport (11.2 miles)

  • Lowest 1 May, 2026

    41 °F

  • Average May

    59.8 °F

  • Highest 20 May, 2026

    91.4 °F

Climate (2021–Present)

Chester, Chester Airport (11.2 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    62.5 °F
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