Round Lake Weather Forecast
- 66
- 89
Thunderstorms Likely
- 61
- 79
Rain Showers
- 63
- 82
Slight Chance Thunderstorms
- 70
- 85
Chance Rain Showers
- 74
- 92
Mostly Sunny
- 74
- 93
Mostly Sunny
Today 17 Jun Lake
Partly cloudy through mid Afternoon, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms early to mid afternoon. A chance of Showers and Thunderstorms late in the afternoon. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of precipitation 40 percent.
Tonight 17 Jun Lake
Mostly cloudy. Showers and Thunderstorms likely early in the Evening, then a chance of Showers and Thunderstorms in the late evening and overnight. Lows in the upper 60s. West Winds 5 to 10 Mph, becoming south after midnight. Chance of precipitation 60 percent.
Round Lake Temperature Statistics
June Temperature
Chicago/Waukegan Regional Airport (12.4 miles)
Lowest 1 June, 2025
38.6 °FAverage June
64.2 °FHighest 11 June, 2025
91.7 °F
Climate (2020–Present)
Chicago/Waukegan Regional Airport (12.4 miles)
Average Low 2020–2025
42.2 °FAverage 2020–2025
50.9 °FAverage High 2020–2025
59.4 °F