Monson Lake Weather Forecast

    • 56
    • 60

    Rain Showers

    • 54
    • 69

    Mostly Cloudy

    • 57
    • 68

    Mostly Cloudy

    • 54
    • 66

    Rain Showers Likely

    • 50
    • 66

    Slight Chance Rain Showers

    • 50
    • 65

    Partly Sunny

Today 26 Sep Swift

Rain Showers in the Morning, then chance of rain Showers in the afternoon. Near steady temperature in the lower 60s. Southeast Winds 15 to 20 Mph. Chance of Showers near 100 percent.

Tonight 26 Sep Swift

Cloudy with a 50 percent chance of rain Showers. Patchy fog after midnight. Near steady temperature in the upper 50s. Southeast Winds 10 to 15 Mph decreasing to up to 10 Mph after midnight.

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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

    64.6 °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

    55.8 °F
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