East St. Louis, IL Weather & Growing Conditions
Tonight
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 8pm and 1am, then showers and thunderstorms likely between 1am and 3am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. North wind 3 to 7 mph. Chance of precipitation is 60%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 61% |
| Monday | 76°F | Chance Showers And Thunderstorms then Mostly Cloudy | 3 to 8 mph N | 38% |
| Monday Night | 63°F | Mostly Cloudy | 5 to 9 mph NE | 13% |
| Tuesday | 75°F | Partly Sunny | 6 to 10 mph NE | 5% |
| Tuesday Night | 56°F | Partly Cloudy | 5 to 10 mph N | 1% |
| Wednesday | 76°F | Mostly Sunny | 6 to 10 mph N | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 3 to 9 mph NE | 0% |
| Thursday | 77°F | Mostly Sunny | 3 to 7 mph NE | 0% |
| Thursday Night | 57°F | Mostly Cloudy | 2 to 7 mph NE | 0% |
| Friday | 79°F | Partly Sunny | 3 to 7 mph NE | 3% |
| Friday Night | 59°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph E | 15% |
| Saturday | 80°F | Slight Chance Rain Showers | 5 mph E | 16% |
| Saturday Night | 59°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph E | 15% |
| Sunday | 85°F | Partly Sunny | 5 mph E | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for East St. Louis, IL
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
Explore more for East St. Louis, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Cahokia St Louis Ap, Il (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 21, 2026.