Coal City Weather Forecast
- 68
- 83
Partly Sunny
- 71
- 89
Partly Sunny
- 75
- 95
Mostly Sunny
- 72
- 95
Chance Thunderstorms
- 71
- 90
Chance Thunderstorms
- 71
- 89
Chance Thunderstorms
- 71
- 92
Partly Sunny
Today 21 Jul Grundy
Mostly cloudy. Highs in the lower 80s. East Winds around 10 Mph.
Tonight 21 Jul Grundy
Partly cloudy. Lows in the upper 60s. East Winds around 5 Mph.
Coal City Temperature Statistics
July Temperature
Joliet Regional Airport (16.8 miles)
Lowest 18 July, 2025
59.9 °FAverage July
77.6 °FHighest 5 July, 2025
94.3 °F
Climate (2020–Present)
Joliet Regional Airport (16.8 miles)
Average Low 2020–2025
43.4 °FAverage 2020–2025
53.5 °FAverage High 2020–2025
63 °F