Lake Jefferson Weather Forecast

    • -18
    • -8

    Cold

    • -13
    • -3

    Cold

    • -15
    • 3

    Cold

    • 3
    • 14

    Partly Sunny

    • -3
    • 12

    Partly Sunny

    • -7
    • 10

    Cold

Today 23 Jan Le Sueur

Colder, sunny. Highs around 9 below. Northwest Winds 5 to 10 Mph.

Tonight 23 Jan Le Sueur

Partly cloudy. Lows around 18 below. West Winds up to 5 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 19 January, 2026

    -7.1 °F

  • Average January

    20.9 °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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