Sleepy Eye State Park Weather Forecast

    • 67
    • 90

    Decreasing Clouds

    • 67
    • 90

    Mostly Cloudy

    • 64
    • 87

    Slight Chance Thunderstorms

    • 63
    • 90

    Chance Thunderstorms

    • 60
    • 80

    Chance Thunderstorms

    • 56
    • 75

    Chance Rain Showers

Today 13 Sep Brown

Mostly sunny. Highs around 90. Southeast Winds up to 10 Mph.

Tonight 13 Sep Brown

Partly cloudy. Lows in the upper 60s. Southeast Winds 5 to 10 Mph.

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Sleepy Eye State Park Temperature Statistics

September Temperature

New Ulm Municipal Airport (11.2 miles)

  • Lowest 4 September, 2025

    37.4 °F

  • Average September

    58.8 °F

  • Highest 8 September, 2025

    78.8 °F

Climate (2020–Present)

New Ulm Municipal Airport (11.2 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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