Monson Lake Weather Forecast

    • 51
    • 64

    Gradual Clearing

    • 48
    • 67

    Mostly Cloudy

    • 45
    • 62

    Mostly Cloudy

    • 45
    • 64

    Partly Sunny

    • 49
    • 65

    Slight Chance Rain Showers

    • 52
    • 69

    Partly Sunny

Today 19 Sep Swift

Cloudy. Highs in the mid 60s. Northeast Winds 5 to 15 Mph.

Tonight 19 Sep Swift

Decreasing Clouds. Lows in the lower 50s. Northeast Winds 5 to 10 Mph.

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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 16 September, 2026

    44.6 °F

  • Average September

    67.5 °F

  • Highest 3 September, 2026

    89.6 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    55.9 °F
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