Cahokia Heights, IL Weather & Growing Conditions
Tonight
57°F
Rain
Rain before 3am, then a slight chance of drizzle. Cloudy, with a low around 57. Southwest wind 7 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain | 7 to 14 mph SW | 85% |
| Wednesday | 65°F | Mostly Cloudy | 7 to 13 mph W | 8% |
| Wednesday Night | 45°F | Partly Cloudy | 6 mph SW | 0% |
| Thursday | 67°F | Sunny | 5 to 9 mph W | 1% |
| Thursday Night | 46°F | Mostly Cloudy | 5 mph NW | 9% |
| Friday | 59°F | Mostly Cloudy | 5 to 10 mph NW | 6% |
| Friday Night | 41°F | Partly Cloudy | 1 to 7 mph N | 1% |
| Saturday | 57°F | Partly Sunny | 1 to 5 mph NW | 0% |
| Saturday Night | 38°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 63°F | Sunny | 1 to 6 mph W | 8% |
| Sunday Night | 38°F | Mostly Clear | 1 to 5 mph W | 5% |
| Monday | 67°F | Sunny | 2 to 7 mph SW | 2% |
| Monday Night | 42°F | Mostly Clear | 3 mph SW | 1% |
| Tuesday | 70°F | Sunny | 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cahokia Heights, IL
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
Explore more for Cahokia Heights, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Cahokia St Louis Ap, Il (1.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.