Coal City, IL Weather & Growing Conditions
Tonight
60°F
Rain
Rain. Cloudy. Low around 60, with temperatures rising to around 62 overnight. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Rain | 15 mph S | 86% |
| Wednesday | 64°F | Chance Rain then Mostly Cloudy | 15 mph SSW | 44% |
| Wednesday Night | 48°F | Mostly Cloudy | 10 to 15 mph SW | 8% |
| Thursday | 60°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph WSW | 15% |
| Thursday Night | 43°F | Chance Rain Showers | 5 mph WNW | 35% |
| Friday | 55°F | Slight Chance Rain Showers | 5 to 10 mph NNW | 21% |
| Friday Night | 36°F | Partly Cloudy | 0 to 5 mph NNW | 6% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph WNW | 6% |
| Saturday Night | 34°F | Partly Cloudy | 0 mph | 3% |
| Sunday | 59°F | Mostly Sunny | 0 to 5 mph W | 11% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph WNW | 8% |
| Monday | 63°F | Sunny | 0 to 10 mph WSW | 4% |
| Monday Night | 39°F | Mostly Clear | 5 mph WSW | 2% |
| Tuesday | 65°F | Sunny | 5 mph WNW | 0% |
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 Nov 4, 2026.