Lewis Island Weather Forecast

    • 59
    • 79

    Partly Cloudy

    • 57
    • 78

    Partly Sunny

    • 63
    • 78

    Chance Rain Showers

    • 55
    • 76

    Rain Showers Likely

    • 56
    • 74

    Mostly Sunny

    • 57
    • 76

    Partly Sunny

Today 26 Aug Southern New Haven

Sunny. Highs in the upper 70s. West Winds 5 to 10 Mph.

Tonight 26 Aug Southern New Haven

Partly cloudy. Isolated Showers in the evening. Lows in the upper 50s. Northwest Winds around 5 Mph. Chance of rain 20 percent.

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Lewis Island Temperature Statistics

August Temperature

New Haven, Tweed-New Haven Airport (6.2 miles)

  • Lowest 19 August, 2025

    56.6 °F

  • Average August

    74.3 °F

  • Highest 12 August, 2025

    91.7 °F

Climate (2020–Present)

New Haven, Tweed-New Haven Airport (6.2 miles)

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  • Average Low 2020–2025

    47.7 °F

  • Average 2020–2025

    55.9 °F

  • Average High 2020–2025

    63.7 °F
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