New Glarus Weather Forecast

    • 70
    • 88

    Slight Chance Thunderstorms

    • 62
    • 84

    Partly Sunny

    • 59
    • 82

    Partly Sunny

    • 62
    • 81

    Mostly Cloudy

    • 70
    • 86

    Rain Showers Likely

    • 62
    • 86

    Chance Rain Showers

    • 57
    • 79

    Partly Sunny

Today 4 Sep Green

Partly sunny with a 20 percent chance of Showers and Thunderstorms. Heat index Readings 98 to 103. Southwest Winds 5 to 10 Mph.

Tonight 4 Sep Green

Partly cloudy. Chance of Showers and slight chance of Thunderstorms through around midnight. Areas of fog after midnight. Lows around 70. West Winds up to 5 Mph shifting to the north after midnight. Chance of precipitation 30 percent. Highest heat index Readings 95 to 96 in the evening.

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New Glarus Temperature Statistics

September Temperature

Monroe Municipal Airport (13 miles)

  • Lowest 1 September, 2026

    72.7 °F

  • Average September

    82.1 °F

  • Highest 1 September, 2026

    92.7 °F

Climate (2021–2026)

Monroe Municipal Airport (13 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    58.6 °F
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