Wentzville, MO Weather & Growing Conditions
Tonight
54°F
Light Rain Likely
Rain likely before 1am, then a slight chance of drizzle between 1am and 4am. Cloudy, with a low around 54. Southwest wind around 9 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Light Rain Likely | 9 mph SW | 63% |
| Wednesday | 62°F | Mostly Cloudy | 8 to 14 mph W | 2% |
| Wednesday Night | 40°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 65°F | Sunny | 5 to 10 mph W | 5% |
| Thursday Night | 40°F | Mostly Cloudy | 5 mph NW | 10% |
| Friday | 57°F | Mostly Cloudy | 5 to 9 mph NW | 2% |
| Friday Night | 36°F | Mostly Cloudy | 1 to 5 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 3 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph NW | 2% |
| Sunday | 62°F | Sunny | 2 to 6 mph W | 8% |
| Sunday Night | 34°F | Mostly Clear | 3 mph W | 3% |
| Monday | 67°F | Sunny | 3 to 7 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 3 mph SW | 1% |
| Tuesday | 69°F | Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Wentzville, MO
Last spring frost
Apr 10
First fall frost
Oct 26
Growing season
199 days
Hardiness zone
6b
Explore more for Wentzville, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Weldon Spring Nws, Mo (11.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.