Coal City, IL Weather & Growing Conditions
Tonight
65°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 65. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph ESE | 31% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 70% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely | 5 mph SW | 79% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 15 mph NNE | 79% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 71% |
| Monday | 67°F | Showers And Thunderstorms Likely | 15 mph ENE | 61% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Tuesday | 65°F | Chance Rain Showers | 10 mph NE | 25% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NE | 14% |
| Wednesday | 68°F | Partly Sunny | 5 to 10 mph NNE | 6% |
| Wednesday Night | 53°F | Mostly Cloudy | 0 to 5 mph NNE | 6% |
| Thursday | 70°F | Partly Sunny | 0 to 5 mph NNE | 3% |
| Thursday Night | 54°F | Mostly Cloudy | 0 to 5 mph NNE | 3% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Coal City, IL
Last spring frost
Apr 16
First fall frost
Oct 26
Growing season
191 days
Hardiness zone
5b
Explore more for Coal City, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Channahon Dresden Isl Dam, Il (7.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.