Harmony Weather Forecast

    • 60
    • 78

    Becoming Sunny

    • 59
    • 80

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

    • 55
    • 78

    Mostly Sunny

    • 50
    • 71

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

Today 20 Aug McHenry

Mostly cloudy in the Morning, then becoming partly cloudy. Patchy fog through mid morning. A chance of Sprinkles in the morning. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 20 Aug McHenry

Mostly clear. Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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Harmony Temperature Statistics

August Temperature

De Kalb Taylor Municipal Airport (18 miles)

  • Lowest 2 August, 2025

    52.7 °F

  • Average August

    73.2 °F

  • Highest 16 August, 2025

    91.4 °F

Climate (2020–Present)

De Kalb Taylor Municipal Airport (18 miles)

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  • Average Low 2020–2025

    40.3 °F

  • Average 2020–2025

    49.5 °F

  • Average High 2020–2025

    58.6 °F
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