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

85°F

Mostly Sunny

Mostly sunny, with a high near 85. South wind around 5 mph, with gusts as high as 15 mph.

7-day forecast for Coal City

When	Temp	Forecast	Wind	Precip
Today	85°F	Mostly Sunny	5 mph S	6%
Tonight	67°F	Mostly Cloudy	5 mph S	6%
Wednesday	82°F	Chance Showers And Thunderstorms	0 to 5 mph SW	49%
Wednesday Night	66°F	Chance Showers And Thunderstorms then Showers And Thunderstorms	0 to 5 mph W	89%
Thursday	81°F	Showers And Thunderstorms Likely	0 to 5 mph S	79%
Thursday Night	64°F	Chance Showers And Thunderstorms then Partly Cloudy	0 to 5 mph ENE	42%
Friday	83°F	Mostly Sunny	0 mph	5%
Friday Night	65°F	Mostly Clear	0 mph	9%
Saturday	86°F	Mostly Sunny	0 to 5 mph SSW	12%
Saturday Night	70°F	Mostly Clear	0 to 5 mph SSW	12%
Sunday	88°F	Mostly Sunny	5 to 10 mph SW	11%
Sunday Night	70°F	Slight Chance Showers And Thunderstorms	5 mph SSW	29%
Monday	87°F	Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms	5 to 10 mph SSW	29%
Monday Night	71°F	Chance Showers And Thunderstorms	5 mph WSW	39%

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

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

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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 Aug 4, 2026.