Decker Lake Weather Forecast

    • 68
    • 92

    Chance Thunderstorms

    • 66
    • 87

    Rain Showers

    • 69
    • 88

    Rain Showers

    • 68
    • 89

    Rain Showers Likely

    • 66
    • 83

    Chance Thunderstorms

    • 65
    • 83

    Slight Chance Thunderstorms

    • 66
    • 85

    Partly Sunny

Today 30 Jun Le Sueur

Sunny. Highs in the lower 90s. Southwest Winds 10 to 15 Mph.

Tonight 30 Jun Le Sueur

Partly cloudy until early Morning, then mostly cloudy with a 40 percent chance of Thunderstorms late in the night. Lows in the upper 60s. South Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Decker Lake Temperature Statistics

June Temperature

Mankato, Mankato Regional Airport (10.6 miles)

  • Lowest 15 June, 2026

    52 °F

  • Average June

    69.1 °F

  • Highest 10 June, 2026

    89.1 °F

Climate (2021–2026)

Mankato, Mankato Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.1 °F
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