Decker Lake Weather Forecast

    • 33
    • 47

    Mostly Cloudy

    • 35
    • 52

    Partly Sunny

    • 44
    • 57

    Rain

    • 32
    • 58

    Rain Likely

    • 35
    • 47

    Mostly Sunny

    • 35
    • 59

    Partly Sunny

Today 3 Mar Le Sueur

Partly sunny. Highs in the upper 40s. South Winds around 5 Mph shifting to the southwest up to 5 Mph in the afternoon.

Tonight 3 Mar Le Sueur

Increasing Clouds. Lows in the lower 30s. South Winds up to 5 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 1 March, 2026

    7 °F

  • Average March

    14.8 °F

  • Highest 1 March, 2026

    21.9 °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

    57.2 °F
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