Calumet City, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calumet City, a city in Cook County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South wind 5 to 10 mph.
7-day forecast for Calumet City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph S | 1% |
| Tonight | 67°F | Mostly Cloudy | 5 mph SSW | 4% |
| Wednesday | 82°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SW | 46% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph WSW | 88% |
| Thursday | 78°F | Rain Showers then Chance Showers And Thunderstorms | 5 mph ENE | 88% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 44% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 6% |
| Friday Night | 65°F | Partly Cloudy | 0 to 5 mph SSE | 8% |
| Saturday | 84°F | Mostly Sunny | 0 to 5 mph SSW | 9% |
| Saturday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 16% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph SW | 16% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 41% |
| Monday | 85°F | Chance Rain Showers | 5 to 10 mph SW | 41% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 47% |
Forecast source: National Weather Service (api.weather.gov) for Calumet City (41.596, -87.539). Updated through the day.
Growing snapshot for Calumet City
Last spring frost
Apr 23
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
6a
More local growing data for Calumet City: nearby ZIP 60409 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Park Forest, Il (10.6 mi from Calumet City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.