Rentchler, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rentchler, a community in St. Clair County, Illinois.
Today
88°F
Sunny
Sunny, with a high near 88. Southeast wind 0 to 3 mph.
7-day forecast for Rentchler
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 0 to 3 mph SE | 0% |
| Tonight | 67°F | Mostly Clear | 3 mph SE | 0% |
| Wednesday | 90°F | Sunny | 1 to 5 mph S | 5% |
| Wednesday Night | 71°F | Slight Chance Showers And Thunderstorms | 6 mph S | 58% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 5 mph S | 70% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 3 mph SE | 49% |
| Friday | 87°F | Chance Showers And Thunderstorms | 3 mph SW | 49% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 2 mph SW | 37% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 0 to 3 mph S | 37% |
| Saturday Night | 72°F | Partly Cloudy | 6 mph S | 9% |
| Sunday | 91°F | Sunny | 3 to 8 mph S | 7% |
| Sunday Night | 74°F | Mostly Clear | 8 mph S | 5% |
| Monday | 93°F | Sunny | 5 to 8 mph SW | 5% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 15% |
Forecast source: National Weather Service (api.weather.gov) for Rentchler (38.493, -89.869). Updated through the day.
Growing snapshot for Rentchler
Last spring frost
Apr 12
First fall frost
Oct 20
Growing season
189 days
Hardiness zone
7a
More local growing data for Rentchler: nearby ZIP 62221 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Belleville Siu Rsch, Il (3.1 mi from Rentchler). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.