Monson Lake Weather Forecast

    • 62
    • 72

    Rain Showers Likely

    • 58
    • 69

    Rain Showers

    • 56
    • 71

    Chance Rain Showers

    • 56
    • 75

    Chance Thunderstorms

    • 56
    • 77

    Slight Chance Thunderstorms

    • 54
    • 75

    Partly Sunny

    • 52
    • 73

    Partly Sunny

Today 18 Sep Swift

Mostly cloudy. Chance of Showers and slight chance of Thunderstorms in the afternoon. Highs in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Tonight 18 Sep Swift

Mostly cloudy. Slight chance of Thunderstorms in the evening. Chance of Thunderstorms after midnight. Showers likely late in the night. Patchy fog late in the night. Lows in the lower 60s. Southeast Winds up to 10 Mph. Chance of precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monson Lake Temperature Statistics

September Temperature

Willmar Municipal Airport - John L. Rice Field (16.2 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 (16.2 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    46.3 °F

  • Average High 2020–2025

    56 °F
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