Round Lake Heights Weather Forecast

    • 70
    • 81

    Chance Thunderstorms

    • 72
    • 88

    Mostly Cloudy

    • 73
    • 89

    Slight Chance Rain Showers

    • 70
    • 91

    Chance Thunderstorms

    • 68
    • 87

    Chance Rain Showers

    • 67
    • 85

    Chance Rain Showers

Today 30 Aug Lake

Mostly cloudy. Showers and scattered Thunderstorms in the Morning, then scattered Showers with isolated Thunderstorms in the afternoon. Breezy. Highs in the lower 80s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation 80 percent.

Tonight 30 Aug Lake

Mostly cloudy. Scattered Showers with isolated Thunderstorms early in the evening. Scattered Showers and Thunderstorms late. Lows in the lower 70s. South Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Round Lake Heights Temperature Statistics

August Temperature

Chicago/Waukegan Regional Airport (12.4 miles)

  • Lowest 24 August, 2026

    52.6 °F

  • Average August

    70.9 °F

  • Highest 16 August, 2026

    85.6 °F

Climate (2021–2026)

Chicago/Waukegan Regional Airport (12.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.7 °F
Get WillyWeather+ to remove ads