Saint Johns Lake Weather Forecast

    • 63
    • 74

    Rain Showers Likely

    • 57
    • 69

    Rain Showers

    • 56
    • 70

    Chance Rain Showers

    • 58
    • 75

    Chance Thunderstorms

    • 56
    • 77

    Slight Chance Thunderstorms

    • 54
    • 70

    Partly Sunny

Today 18 Sep Kandiyohi

Mostly cloudy. Patchy fog early in the morning. Slight chance of Showers early in the Morning, then slight chance of Thunderstorms in the afternoon. Highs in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 18 Sep Kandiyohi

Mostly cloudy with a 50 percent chance of Thunderstorms. Lows in the lower 60s. East Winds up to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Johns Lake Temperature Statistics

September Temperature

Willmar Municipal Airport - John L. Rice Field (2.5 miles)

  • Lowest 4 September, 2025

    37.4 °F

  • Average September

    63.4 °F

  • Highest 14 September, 2025

    87.8 °F

Climate (2020–Present)

Willmar Municipal Airport - John L. Rice Field (2.5 miles)

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

  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    46.3 °F

  • Average High 2020–2025

    56 °F
Get WillyWeather+ to remove ads