South Chicago Heights, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Chicago Heights, a village in Cook County, Illinois.
Today
65°F
Scattered Rain Showers then Patchy Drizzle
Scattered rain showers before 10am, then patchy drizzle and isolated rain showers. Mostly cloudy. High near 65, with temperatures falling to around 56 in the afternoon. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for South Chicago Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Scattered Rain Showers then Patchy Drizzle | 15 mph SW | 27% |
| Tonight | 48°F | Patchy Drizzle then Mostly Cloudy | 15 mph SW | 10% |
| Thursday | 57°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph WSW | 34% |
| Thursday Night | 42°F | Rain Showers Likely | 10 mph NW | 58% |
| Friday | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NNW | 22% |
| Friday Night | 36°F | Partly Cloudy | 5 to 10 mph NW | 6% |
| Saturday | 51°F | Mostly Sunny | 5 mph NW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 5% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 2% |
| Monday | 60°F | Sunny | 5 to 10 mph SW | 1% |
| Monday Night | 40°F | Mostly Clear | 5 mph WSW | 1% |
| Tuesday | 62°F | Sunny | 5 mph WNW | 1% |
| Tuesday Night | 39°F | Partly Cloudy | 0 to 5 mph WNW | 2% |
Forecast source: National Weather Service (api.weather.gov) for South Chicago Heights (41.483, -87.637). Updated through the day.
Growing snapshot for South Chicago Heights
Last spring frost
Apr 23
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
6a
More local growing data for South Chicago Heights: nearby ZIP 60475 weather · frost dates · planting calendar · Illinois frost dates
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Calumet City
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Chicago
Chicago Heights
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Climate data from the nearest NOAA station, Park Forest, Il (3.1 mi from South Chicago Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.