Grass Island Weather Forecast

    • 44
    • 51

    Mostly Cloudy

    • 52
    • 58

    Mostly Cloudy

    • 54
    • 66

    Partly Sunny

    • 55
    • 71

    Chance Rain Showers

    • 54
    • 68

    Slight Chance Rain Showers

    • 53
    • 69

    Partly Sunny

    • 50
    • 63

    Partly Sunny

Today 12 Apr Southern New Haven

Mostly sunny. Near steady temperature in the mid 50s. South Winds 5 to 10 Mph.

Tonight 12 Apr Southern New Haven

Mostly cloudy. A slight chance of Showers after midnight. Lows in the mid 40s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Island Temperature Statistics

April Temperature

Chester, Chester Airport (11.2 miles)

  • Lowest 8 April, 2026

    26.6 °F

  • Average April

    46.5 °F

  • Highest 1 April, 2026

    73.4 °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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