Lemont Weather Forecast
- 60
- 78
Mostly Cloudy
- 60
- 70
Chance Rain Showers
- 65
- 78
Chance Thunderstorms
- 74
- 88
Partly Sunny
- 76
- 93
Mostly Sunny
- 76
- 94
Mostly Sunny
Today 25 Jun Southern Cook
Partly cloudy. Temperatures in the upper 70s. Northwest Winds around 10 Mph.
Tonight 25 Jun Southern Cook
Partly cloudy in the Evening, then becoming mostly cloudy. Lows around 60. Northeast Winds around 5 Mph.
Lemont Temperature Statistics
June Temperature
Lewis University Airport (6.8 miles)
Lowest 2 June, 2026
45.6 °FAverage June
69.4 °FHighest 6 June, 2026
90.6 °F
Climate (2021–2026)
Lewis University Airport (6.8 miles)
Average Low 2021–2026
43.5 °FAverage 2021–2026
52.4 °FAverage High 2021–2026
61.9 °F