McHenry Weather Forecast

    • 25
    • 36

    Slight Chance Wintry Mix

    • 26
    • 34

    Rain/Snow Likely

    • 33
    • 39

    Rain

    • 28
    • 40

    Chance Rain

    • 27
    • 41

    Partly Sunny

    • 26
    • 40

    Partly Sunny

    • 25
    • 36

    Partly Sunny

Today 11 Dec McHenry

Mostly cloudy. A 40 percent chance of light freezing rain and light snow after midnight. Lows in the mid 20s. Southeast Winds 10 to 15 Mph.

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McHenry Temperature Statistics

December Temperature

Chicago/Waukegan Regional Airport (21.1 miles)

  • Lowest 7 December, 2018

    12.9 °F
  • Average December

    28.1 °F
  • Highest 1 December, 2018

    41 °F

Climate (2010–Present)

Chicago/Waukegan Regional Airport (21.1 miles)

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  • Average Low 2010–Present

    40.4 °F
  • Average 2010–Present

    48.8 °F
  • Average High 2010–Present

    56.6 °F
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