Lake Jefferson Weather Forecast

    • 60
    • 81

    Thunderstorms Likely

    • 61
    • 80

    Mostly Sunny

    • 65
    • 81

    Chance Thunderstorms

    • 65
    • 83

    Chance Thunderstorms

    • 66
    • 84

    Chance Thunderstorms

    • 66
    • 82

    Chance Thunderstorms

Today 5 Jul Le Sueur

Mostly cloudy. Slight chance of Thunderstorms late in the Morning, then chance of Thunderstorms early in the afternoon. Thunderstorms likely late in the afternoon. Near steady temperature in the upper 70s. West Winds around 10 Mph. Chance of Thunderstorms 70 percent.

Tonight 5 Jul Le Sueur

Cooler. Mostly cloudy with a 20 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the lower 60s. North Winds 5 to 10 Mph.

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Lake Jefferson Temperature Statistics

July Temperature

Mankato, Mankato Regional Airport (7.5 miles)

  • Lowest 1 July, 2025

    63 °F

  • Average July

    77 °F

  • Highest 3 July, 2025

    90 °F

Climate (2020–Present)

Mankato, Mankato Regional Airport (7.5 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    56.8 °F
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