East St. Louis, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for East St. Louis, a city in St. Clair County, Illinois.
Today
89°F
Sunny
Sunny, with a high near 89. South wind 2 to 6 mph.
7-day forecast for East St. Louis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 2 to 6 mph S | 0% |
| Tonight | 69°F | Mostly Clear | 2 to 6 mph SE | 0% |
| Wednesday | 92°F | Sunny | 2 to 7 mph S | 9% |
| Wednesday Night | 73°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 65% |
| Thursday | 89°F | Showers And Thunderstorms Likely | 6 mph S | 70% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 1 to 5 mph SE | 38% |
| Friday | 89°F | Chance Showers And Thunderstorms | 5 mph SW | 38% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 34% |
| Saturday | 91°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph S | 34% |
| Saturday Night | 74°F | Mostly Clear | 6 mph S | 7% |
| Sunday | 94°F | Sunny | 5 to 8 mph S | 7% |
| Sunday Night | 76°F | Mostly Clear | 8 mph S | 5% |
| Monday | 95°F | Mostly Sunny | 5 to 8 mph SW | 5% |
| Monday Night | 76°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 15% |
Forecast source: National Weather Service (api.weather.gov) for East St. Louis (38.616, -90.131). Updated through the day.
Growing snapshot for East St. Louis
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
More local growing data for East St. Louis: nearby ZIP 62205 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Cahokia St Louis Ap, Il (3 mi from East St. Louis). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.