Algonquin Weather Forecast

    • 44
    • 48

    Rain Showers

    • 24
    • 48

    Rain/Snow

    • 30
    • 40

    Snow Likely

    • 24
    • 39

    Chance Rain/Snow

    • 26
    • 41

    Partly Sunny

    • 31
    • 46

    Mostly Sunny

Today 4 Mar McHenry

Isolated Thunderstorms. Numerous Showers in the Morning, then rain and Showers in the afternoon. Breezy. Highs in the upper 40s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation near 100 percent.

Tonight 4 Mar McHenry

Rain in the Evening, then numerous Showers after midnight. Breezy. Nearly steady Temperatures in the mid 40s. East Winds 10 to 15 Mph early in the Evening, becoming 10 to 20 Mph in the late evening and early Morning, then becoming south 10 to 15 Mph late. Gusts up to 30 Mph. Chance of precipitation near 100 percent.

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Algonquin Temperature Statistics

March Temperature

Chicago / West Chicago, Dupage Airport (18.6 miles)

  • Lowest 1 March, 2025

    19 °F

  • Average March

    26.1 °F

  • Highest 1 March, 2025

    33.1 °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

    51.5 °F

  • Average High 2020–2025

    61 °F
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