Lake Jefferson Weather Forecast

    • -5
    • 5

    Cold

    • 8
    • 14

    Chance Snow

    • 1
    • 24

    Chance Snow

    • -15
    • 12

    Mostly Cloudy

    • -22
    • -8

    Cold

    • -11
    • -3

    Slight Chance Snow

Today 19 Jan Le Sueur

Colder. Mostly cloudy then becoming mostly sunny in the morning then becoming partly sunny. Patchy blowing snow early in the morning. Highs around 5. Northwest Winds 10 to 20 Mph.

Tonight 19 Jan Le Sueur

Decreasing Clouds. Lows around 6 below. West Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Jefferson Temperature Statistics

January Temperature

Mankato, Mankato Regional Airport (7.5 miles)

  • Lowest 17 January, 2026

    -2 °F

  • Average January

    24.1 °F

  • Highest 13 January, 2026

    44.1 °F

Climate (2021–Present)

Mankato, Mankato Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57 °F
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