Decker Lake Weather Forecast

    • 57
    • 73

    Rain Showers

    • 53
    • 75

    Rain Showers

    • 50
    • 71

    Partly Sunny

    • 55
    • 76

    Mostly Sunny

    • 58
    • 79

    Chance Thunderstorms

    • 57
    • 78

    Chance Thunderstorms

Today 16 Jun Le Sueur

Mostly sunny. Highs in the lower 70s. Northwest Winds 10 to 15 Mph with Gusts to around 30 Mph.

Tonight 16 Jun Le Sueur

Mostly cloudy. Slight chance of rain Showers in the Evening, then rain Showers and slight chance of Thunderstorms after midnight. Lows in the mid 50s. South Winds 5 to 15 Mph. Chance of precipitation 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Decker Lake Temperature Statistics

June Temperature

Mankato, Mankato Regional Airport (10.6 miles)

  • Lowest 12 June, 2026

    57 °F

  • Average June

    71.5 °F

  • Highest 10 June, 2026

    89.1 °F

Climate (2021–Present)

Mankato, Mankato Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    57.2 °F
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