Decker Lake Weather Forecast

    • 70
    • 92

    Areas Smoke

    • 70
    • 93

    Areas Smoke

    • 71
    • 95

    Mostly Sunny

    • 68
    • 92

    Mostly Sunny

    • 69
    • 92

    Slight Chance Thunderstorms

    • 65
    • 89

    Partly Sunny

Today 15 Jul Le Sueur

Sunny. Highs in the lower 90s. West Winds up to 5 Mph.

Tonight 15 Jul Le Sueur

Mostly clear. Areas of smoke after midnight. Lows around 70. South Winds up to 5 Mph.

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Decker Lake Temperature Statistics

July Temperature

Mankato, Mankato Regional Airport (10.6 miles)

  • Lowest 10 July, 2026

    64 °F

  • Average July

    75.1 °F

  • Highest 11 July, 2026

    86 °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

    48.3 °F

  • Average High 2021–2026

    57.1 °F
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