Marengo Weather Forecast

    • 37
    • 58

    Rain Likely

    • 44
    • 65

    Chance Rain Showers

    • 38
    • 55

    Partly Sunny

    • 33
    • 53

    Mostly Sunny

    • 36
    • 57

    Partly Sunny

    • 42
    • 59

    Partly Sunny

Today 19 Oct McHenry

Cloudy in the Morning, then clearing. Showers early in the Morning, then a slight chance of Showers late in the morning. Breezy with Highs in the upper 50s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of precipitation 80 percent.

Tonight 19 Oct McHenry

Clear. Patchy frost late. Lows in the upper 30s. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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Marengo Temperature Statistics

October Temperature

De Kalb Taylor Municipal Airport (22.4 miles)

  • Lowest 9 October, 2025

    39.4 °F

  • Average October

    60.9 °F

  • Highest 3 October, 2025

    87.3 °F

Climate (2020–Present)

De Kalb Taylor Municipal Airport (22.4 miles)

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  • Average Low 2020–2025

    40.4 °F

  • Average 2020–2025

    49.6 °F

  • Average High 2020–2025

    58.7 °F
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