Round Lake Beach Weather Forecast

    • 54
    • 62

    Slight Chance Rain Showers

    • 48
    • 58

    Rain

    • 34
    • 54

    Chance Rain

    • 39
    • 56

    Mostly Sunny

    • 45
    • 65

    Partly Sunny

    • 45
    • 66

    Partly Sunny

Today 14 Oct Lake

Mostly cloudy. A chance of Showers early in the morning. A slight chance of Showers late in the morning. Cooler. Highs in the lower 60s. Northeast Winds 5 to 10 Mph, increasing to 10 to 15 Mph in the afternoon. Chance of precipitation 30 percent.

Tonight 14 Oct Lake

Mostly cloudy. Near steady temperature in the mid 50s. Northeast Winds 10 to 15 Mph.

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Round Lake Beach Temperature Statistics

October Temperature

Chicago/Waukegan Regional Airport (11.8 miles)

  • Lowest 3 October, 2026

    42.7 °F

  • Average October

    61 °F

  • Highest 12 October, 2026

    86 °F

Climate (2021–2026)

Chicago/Waukegan Regional Airport (11.8 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.7 °F
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