Flint Hill, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Flint Hill, a city in St. Charles County, Missouri.
Tonight
51°F
Light Rain Likely
Rain likely before 11pm, then a chance of rain showers between 11pm and midnight, then a slight chance of rain between midnight and 3am, then a chance of rain showers between 3am and 4am. Cloudy, with a low around 51. Southwest wind 8 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
7-day forecast for Flint Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Light Rain Likely | 8 to 13 mph SW | 67% |
| Wednesday | 62°F | Mostly Cloudy | 8 to 14 mph W | 4% |
| Wednesday Night | 40°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 65°F | Sunny | 5 to 12 mph W | 5% |
| Thursday Night | 40°F | Mostly Cloudy | 5 mph NW | 10% |
| Friday | 57°F | Mostly Cloudy | 5 to 8 mph NW | 2% |
| Friday Night | 36°F | Mostly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 57°F | Partly Sunny | 0 to 3 mph NW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NW | 2% |
| Sunday | 63°F | Sunny | 1 to 6 mph W | 8% |
| Sunday Night | 34°F | Mostly Clear | 3 mph W | 3% |
| Monday | 67°F | Sunny | 2 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) for Flint Hill (38.863, -90.869). Updated through the day.
Growing snapshot for Flint Hill
Last spring frost
Apr 10
First fall frost
Oct 26
Growing season
199 days
Hardiness zone
6b
More local growing data for Flint Hill: nearby ZIP 63385 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Augusta
Cottleville
Dardenne Prairie
Defiance
Foristell
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New Melle
O'Fallon
St. Paul
St. Peters
Weldon Spring
Weldon Spring Heights
Wentzville
West Alton
Climate data from the nearest NOAA station, Weldon Spring Nws, Mo (11.6 mi from Flint Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.