Monson Lake State Park Weather Forecast

    • 70
    • 90

    Patchy Smoke

    • 71
    • 93

    Slight Chance Thunderstorms

    • 65
    • 89

    Rain Showers

    • 61
    • 80

    Chance Thunderstorms

    • 62
    • 83

    Mostly Sunny

    • 65
    • 84

    Mostly Sunny

Today 28 Jul Swift

Mostly sunny. Patchy smoke. Near steady temperature around 90. West Winds up to 5 Mph.

Tonight 28 Jul Swift

Mostly cloudy in the evening then clearing. Patchy smoke. Lows around 70. Southeast Winds around 5 Mph.

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Monson Lake State Park Temperature Statistics

July Temperature

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

  • Lowest 23 July, 2026

    51.8 °F

  • Average July

    75.3 °F

  • Highest 17 July, 2026

    95 °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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