Marengo Weather Forecast

    • 11
    • 19

    Becoming Sunny

    • 28
    • 32

    Partly Sunny

    • 29
    • 38

    Mostly Cloudy

    • 19
    • 48

    Rain

    • 21
    • 28

    Mostly Cloudy

    • 32
    • 44

    Chance Rain

Today 15 Dec Morrow

Mostly cloudy. Highs around 18. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as zero.

Tonight 15 Dec Morrow

Partly cloudy in the Evening, then clearing. Cold with Lows around 12. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marengo Temperature Statistics

December Temperature

Knox County Airfield (15.5 miles)

  • Lowest 9 December, 2025

    8.6 °F
  • Average December

    25.9 °F
  • Highest 10 December, 2025

    39.2 °F

Climate (2020–Present)

Knox County Airfield (15.5 miles)

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  • Average Low 2020–2025

    43.3 °F
  • Average 2020–2025

    52.2 °F
  • Average High 2020–2025

    61.5 °F
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