Third Lake Weather Forecast
- 58
- 81
Mostly Sunny
- 57
- 82
Mostly Sunny
- 59
- 83
Mostly Sunny
- 62
- 84
Partly Sunny
- 61
- 79
Slight Chance Thunderstorms
- 60
- 77
Chance Rain Showers
- 60
- 78
Chance Rain Showers
Today 15 Sep Lake
Sunny. Highs in the lower 80s Inland, but only in the mid 70s near the lake. East Winds 5 to 10 Mph.
Tonight 15 Sep Lake
Mostly clear. Lows in the upper 50s. East Winds around 5 Mph.
Third Lake Temperature Statistics
September Temperature
Chicago/Waukegan Regional Airport (8.1 miles)
Lowest 4 September, 2025
46 °FAverage September
63.6 °FHighest 2 September, 2025
79 °F
Climate (2020–Present)
Chicago/Waukegan Regional Airport (8.1 miles)
Average Low 2020–2025
42.2 °FAverage 2020–2025
51 °FAverage High 2020–2025
59.6 °F