Coal City, IL Weather & Growing Conditions
This Afternoon
79°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms. Cloudy, with a high near 79. South southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Chance Showers And Thunderstorms | 5 mph SSE | 27% |
| Tonight | 66°F | Showers And Thunderstorms Likely | 5 mph S | 89% |
| Sunday | 73°F | Showers And Thunderstorms Likely | 5 to 15 mph NNE | 67% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 45% |
| Monday | 67°F | Chance Rain Showers | 15 mph ENE | 54% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 44% |
| Tuesday | 66°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NE | 13% |
| Wednesday | 68°F | Mostly Sunny | 5 to 10 mph NNE | 8% |
| Wednesday Night | 54°F | Mostly Cloudy | 5 mph NNE | 1% |
| Thursday | 70°F | Partly Sunny | 5 mph NNE | 3% |
| Thursday Night | 54°F | Mostly Cloudy | 0 to 5 mph NNE | 3% |
| Friday | 74°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Friday Night | 54°F | Partly Cloudy | 0 to 5 mph ENE | 2% |
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.