Dacy Airport Weather Forecast

    • 54
    • 72

    Becoming Sunny

    • 57
    • 76

    Partly Sunny

    • 60
    • 78

    Mostly Sunny

    • 68
    • 83

    Partly Sunny

    • 67
    • 90

    Partly Sunny

    • 64
    • 87

    Slight Chance Thunderstorms

Today 22 Jul McHenry

Mostly sunny in the Morning, then becoming partly cloudy. Highs in the lower 70s. North Winds 5 to 10 Mph.

Tonight 22 Jul McHenry

Mostly clear. Lows in the mid 50s. Northeast Winds around 5 Mph, becoming west after midnight.

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Dacy Airport Temperature Statistics

July Temperature

Janesville-Rock County (25.5 miles)

  • Lowest 12 July, 2026

    53.6 °F

  • Average July

    75 °F

  • Highest 14 July, 2026

    95 °F

Climate (2021–2026)

Janesville-Rock County (25.5 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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