Decker Lake Weather Forecast

    • 13
    • 17

    Increasing Clouds

    • 9
    • 31

    Snow

    • 8
    • 20

    Mostly Cloudy

    • 4
    • 19

    Chance Snow

    • 13
    • 22

    Mostly Cloudy

    • 23
    • 37

    Mostly Cloudy

Today 31 Jan Le Sueur

Sunny. Highs around 17. South Winds up to 10 Mph.

Tonight 31 Jan Le Sueur

Not as cold. Partly cloudy in the Evening, then snow after midnight. Snow accumulation around 1 inch. Lows around 13. South Winds 10 to 15 Mph. Chance of snow near 100 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Decker Lake Temperature Statistics

January Temperature

Mankato, Mankato Regional Airport (10.6 miles)

  • Lowest 23 January, 2026

    -20 °F

  • Average January

    14.7 °F

  • Highest 13 January, 2026

    44.1 °F

Climate (2021–Present)

Mankato, Mankato Regional Airport (10.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    39.2 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    56.9 °F
Get WillyWeather+ to remove ads