Monson Lake Weather Forecast

    • 66
    • 81

    Chance Thunderstorms

    • 65
    • 80

    Rain Showers Likely

    • 68
    • 80

    Rain Showers

    • 59
    • 82

    Partly Sunny

    • 53
    • 76

    Partly Sunny

    • 57
    • 78

    Partly Sunny

Today 5 Sep Swift

Patchy fog in the morning. Partly sunny with a 20 percent chance of Thunderstorms. Highs in the lower 80s. Southeast Winds 10 to 15 Mph.

Tonight 5 Sep Swift

Mostly clear in the Evening, then mostly cloudy with chance of Thunderstorms after midnight. Lows in the mid 60s. Southeast Winds 10 to 15 Mph. Chance of Thunderstorms 40 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 1 September, 2026

    55.4 °F

  • Average September

    72.2 °F

  • Highest 2 September, 2026

    84.2 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    55.9 °F
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