Decker Lake Weather Forecast

    • 34
    • 55

    Increasing Clouds

    • 34
    • 51

    Partly Sunny

    • 33
    • 54

    Partly Sunny

    • 42
    • 63

    Partly Sunny

    • 42
    • 66

    Partly Sunny

    • 43
    • 67

    Slight Chance Thunderstorms

Today 29 Apr Le Sueur

Increasing Clouds. Areas of frost early in the morning. A 20 percent chance of rain Showers late in the afternoon. Highs in the mid 50s. Northwest Winds 5 to 15 Mph.

Tonight 29 Apr Le Sueur

Partly cloudy. Areas of frost after midnight. Lows in the mid 30s. North Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Decker Lake Temperature Statistics

April Temperature

Mankato, Mankato Regional Airport (10.6 miles)

  • Lowest 7 April, 2026

    21.9 °F

  • Average April

    44.3 °F

  • Highest 12 April, 2026

    80.1 °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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