Johnson Island Weather Forecast

    • 52
    • 77

    Chance Rain Showers

    • 50
    • 63

    Partly Sunny

    • 57
    • 75

    Partly Sunny

    • 52
    • 74

    Chance Rain Showers

    • 52
    • 70

    Chance Rain Showers

    • 55
    • 71

    Slight Chance Rain Showers

Today 29 May Southern New Haven

Mostly sunny. Highs in the mid 70s. Northwest Winds 5 to 10 Mph. Gusts up to 20 Mph this afternoon.

Tonight 29 May Southern New Haven

Mostly cloudy in the Evening, then becoming partly cloudy. A 50 percent chance of Showers. Lows in the lower 50s. Southwest Winds around 5 Mph, becoming northwest 10 to 15 Mph with Gusts up to 25 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Island Temperature Statistics

May Temperature

New Haven, Tweed-New Haven Airport (6.8 miles)

  • Lowest 4 May, 2026

    39 °F

  • Average May

    58.5 °F

  • Highest 20 May, 2026

    89.1 °F

Climate (2021–Present)

New Haven, Tweed-New Haven Airport (6.8 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    63.4 °F
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