Harmony Weather Forecast

    • 51
    • 75

    Partly Sunny

    • 47
    • 62

    Mostly Cloudy

    • 54
    • 67

    Mostly Cloudy

    • 57
    • 71

    Chance Rain Showers

    • 54
    • 74

    Slight Chance Rain Showers

    • 56
    • 73

    Mostly Cloudy

    • 55
    • 70

    Rain Showers Likely

Today 25 Oct McHenry

Mostly cloudy with a 40 percent chance of Showers. Highs in the upper 60s.

Tonight 25 Oct McHenry

Mostly cloudy. Patchy fog late. Lows in the lower 50s. Southwest Winds around 5 Mph, becoming north after midnight.

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Harmony Temperature Statistics

October Temperature

De Kalb Taylor Municipal Airport (18 miles)

  • Lowest 17 October, 2026

    33.1 °F

  • Average October

    58.3 °F

  • Highest 12 October, 2026

    86.5 °F

Climate (2021–2026)

De Kalb Taylor Municipal Airport (18 miles)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    59.8 °F
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