Millstadt, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millstadt, a village in St. Clair County, Illinois.
Tonight
73°F
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 73. Southeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Millstadt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph SE | 21% |
| Saturday | 97°F | Mostly Sunny | 7 mph SW | 6% |
| Saturday Night | 73°F | Partly Cloudy | 6 mph S | 0% |
| Sunday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 mph W | 16% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 7 mph N | 53% |
| Monday | 81°F | Showers And Thunderstorms Likely | 6 to 10 mph N | 66% |
| Monday Night | 61°F | Showers And Thunderstorms Likely | 7 to 10 mph N | 66% |
| Tuesday | 71°F | Chance Rain Showers then Mostly Cloudy | 12 mph N | 25% |
| Tuesday Night | 55°F | Mostly Cloudy | 6 to 12 mph N | 6% |
| Wednesday | 74°F | Mostly Sunny | 9 mph N | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 3 to 7 mph N | 2% |
| Thursday | 75°F | Mostly Sunny | 5 to 8 mph N | 3% |
| Thursday Night | 57°F | Partly Cloudy | 3 to 7 mph N | 3% |
| Friday | 76°F | Mostly Sunny | 7 mph N | 5% |
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 Sep 19, 2026.