Round Lake Heights Weather Forecast

    • 45
    • 62

    Mostly Cloudy

    • 42
    • 64

    Partly Sunny

    • 48
    • 64

    Mostly Cloudy

    • 51
    • 64

    Chance Rain Showers

    • 49
    • 65

    Slight Chance Rain Showers

    • 52
    • 70

    Slight Chance Rain Showers

    • 53
    • 74

    Chance Rain Showers

Today 24 May Lake

Mostly sunny through mid Morning, then becoming partly cloudy. Highs in the lower 60s Inland, but only in the mid 50s near the lake. East Winds 5 to 10 Mph.

Tonight 24 May Lake

Mostly cloudy. Isolated Showers late. Lows in the mid 40s. Northeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

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Round Lake Heights Temperature Statistics

May Temperature

Chicago/Waukegan Regional Airport (12.4 miles)

  • Lowest 9 May, 2025

    36.6 °F

  • Average May

    54.8 °F

  • Highest 16 May, 2025

    86.6 °F

Climate (2020–Present)

Chicago/Waukegan Regional Airport (12.4 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    59.5 °F
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