Decker Lake Weather Forecast

    • 67
    • 87

    Patchy Smoke

    • 68
    • 88

    Slight Chance Thunderstorms

    • 65
    • 88

    Rain Showers

    • 62
    • 79

    Rain Showers Likely

    • 62
    • 82

    Mostly Sunny

    • 64
    • 83

    Mostly Sunny

    • 66
    • 84

    Slight Chance Thunderstorms

Today 28 Jul Le Sueur

Mostly sunny. Patchy smoke late in the afternoon. Near steady temperature in the mid 80s. South Winds up to 5 Mph.

Tonight 28 Jul Le Sueur

Partly cloudy. Patchy smoke in the evening. Patchy smoke late in the night. Lows in the upper 60s. Southeast Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Decker Lake Temperature Statistics

July Temperature

Mankato, Mankato Regional Airport (10.6 miles)

  • Lowest 23 July, 2026

    55.9 °F

  • Average July

    75.5 °F

  • Highest 15 July, 2026

    90 °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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