Algonquin Weather Forecast

    • 36
    • 51

    Mostly Cloudy

    • 39
    • 48

    Rain Showers

    • 30
    • 53

    Slight Chance Rain Showers

    • 29
    • 49

    Partly Sunny

    • 21
    • 41

    Slight Chance Snow Showers

    • 30
    • 47

    Mostly Sunny

Today 3 Apr McHenry

Mostly cloudy. Breezy. Highs in the lower 50s. West Winds 15 to 20 Mph, Diminishing to 10 to 15 Mph in the afternoon. Gusts up to 30 Mph.

Tonight 3 Apr McHenry

Mostly cloudy. Lows in the upper 30s. North Winds around 5 Mph, becoming northeast after midnight.

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Algonquin Temperature Statistics

April Temperature

Chicago / West Chicago, Dupage Airport (18.6 miles)

  • Lowest 1 April, 2025

    27 °F

  • Average April

    38.4 °F

  • Highest 1 April, 2025

    46 °F

Climate (2020–Present)

Chicago / West Chicago, Dupage Airport (18.6 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    51.6 °F

  • Average High 2020–2025

    61.1 °F
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