Clear Lake Weather Forecast

    • 66
    • 87

    Partly Sunny

    • 66
    • 88

    Slight Chance Thunderstorms

    • 64
    • 86

    Slight Chance Thunderstorms

    • 63
    • 89

    Chance Thunderstorms

    • 60
    • 79

    Rain Showers Likely

    • 57
    • 74

    Chance Rain Showers

    • 53
    • 72

    Chance Rain Showers

Today 13 Sep Sibley

Mostly sunny. Highs in the mid 80s. East Winds 5 to 10 Mph.

Tonight 13 Sep Sibley

Mostly cloudy. Lows in the mid 60s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

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Clear Lake Temperature Statistics

September Temperature

New Ulm Municipal Airport (8.7 miles)

  • Lowest 4 September, 2025

    37.4 °F

  • Average September

    59.5 °F

  • Highest 8 September, 2025

    78.8 °F

Climate (2020–Present)

New Ulm Municipal Airport (8.7 miles)

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  • Average Low 2020–2025

    37.2 °F

  • Average 2020–2025

    46.9 °F

  • Average High 2020–2025

    56.5 °F
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