Decker Lake Weather Forecast

    • 40
    • 55

    Partly Sunny

    • 47
    • 69

    Partly Sunny

    • 26
    • 56

    Partly Sunny

    • 28
    • 43

    Mostly Sunny

    • 37
    • 56

    Partly Sunny

    • 44
    • 65

    Partly Sunny

Today 24 Mar Le Sueur

Mostly cloudy. Highs in the mid 50s. South Winds 5 to 10 Mph.

Tonight 24 Mar Le Sueur

Decreasing Clouds. Lows around 40. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Decker Lake Temperature Statistics

March Temperature

Mankato, Mankato Regional Airport (10.6 miles)

  • Lowest 16 March, 2026

    3 °F

  • Average March

    36 °F

  • Highest 21 March, 2026

    78.1 °F

Climate (2021–Present)

Mankato, Mankato Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    57.1 °F
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