Lewis Island Weather Forecast

    • 68
    • 81

    Chance Rain Showers

    • 63
    • 83

    Decreasing Clouds

    • 60
    • 78

    Chance Rain Showers

    • 58
    • 73

    Partly Sunny

    • 61
    • 76

    Mostly Sunny

    • 62
    • 78

    Partly Sunny

    • 67
    • 76

    Chance Rain Showers

Today 3 Sep Southern New Haven

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Highs in the lower 80s. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 3 Sep Southern New Haven

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the evening. Humid with Lows in the upper 60s. West Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewis Island Temperature Statistics

September Temperature

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

  • Lowest 1 September, 2026

    63 °F

  • Average September

    68.7 °F

  • Highest 1 September, 2026

    73.9 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    63.3 °F
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