Millstadt, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millstadt, a village in St. Clair County, Illinois.
Tonight
54°F
Rain
Rain before 3am, then a slight chance of drizzle. Mostly cloudy, with a low around 54. Southwest wind 8 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
7-day forecast for Millstadt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain | 8 to 12 mph SW | 75% |
| Wednesday | 63°F | Mostly Cloudy | 7 to 14 mph W | 6% |
| Wednesday Night | 45°F | Mostly Clear | 6 mph W | 0% |
| Thursday | 65°F | Sunny | 6 to 9 mph W | 1% |
| Thursday Night | 46°F | Mostly Cloudy | 6 mph NW | 9% |
| Friday | 57°F | Partly Sunny | 6 to 10 mph NW | 5% |
| Friday Night | 41°F | Partly Cloudy | 6 mph N | 1% |
| Saturday | 55°F | Partly Sunny | 5 mph NW | 0% |
| Saturday Night | 38°F | Partly Cloudy | 2 mph W | 0% |
| Sunday | 61°F | Sunny | 2 to 6 mph W | 8% |
| Sunday Night | 38°F | Mostly Clear | 3 mph W | 5% |
| Monday | 66°F | Sunny | 3 to 7 mph SW | 2% |
| Monday Night | 42°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 68°F | Sunny | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Millstadt (38.457, -90.086). Updated through the day.
Growing snapshot for Millstadt
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
More local growing data for Millstadt: nearby ZIP 62260 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Cahokia St Louis Ap, Il (8.3 mi from Millstadt). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.