Coal City, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coal City, a village in Grundy County, Illinois.
Today
82°F
Showers And Thunderstorms then Showers And Thunderstorms Likely
Showers and thunderstorms before 11am, then showers and thunderstorms likely. Cloudy. High near 82, with temperatures falling to around 79 in the afternoon. Southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Coal City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SE | 85% |
| Tonight | 66°F | Showers And Thunderstorms Likely | 5 mph SSW | 88% |
| 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) for Coal City (41.279, -88.280). Updated through the day.
Growing snapshot for Coal City
Last spring frost
Apr 16
First fall frost
Oct 26
Growing season
191 days
Hardiness zone
5b
More local growing data for Coal City: nearby ZIP 60416 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Braceville
Carbon Hill
Diamond
East Brooklyn
Gardner
Godley
Kinsman
Mazon
Morris
South Wilmington
Verona
Climate data from the nearest NOAA station, Channahon Dresden Isl Dam, Il (7.2 mi from Coal City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.