Sunnyside Weather Forecast

    • 54
    • 74

    Mostly Sunny

    • 59
    • 77

    Partly Sunny

    • 61
    • 80

    Mostly Sunny

    • 68
    • 84

    Mostly Sunny

    • 68
    • 91

    Slight Chance Thunderstorms

    • 65
    • 88

    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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Sunnyside Temperature Statistics

July Temperature

Chicago/Waukegan Regional Airport (18.6 miles)

  • Lowest 20 July, 2026

    55.9 °F

  • Average July

    75.4 °F

  • Highest 1 July, 2026

    93.7 °F

Climate (2021–2026)

Chicago/Waukegan Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    59.8 °F
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