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.
Today
90°F
Patchy Fog then Sunny
Patchy fog before 8am. Sunny, with a high near 90. South wind around 3 mph.
7-day forecast for Flint Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Patchy Fog then Sunny | 3 mph S | 0% |
| Tonight | 69°F | Mostly Clear | 3 mph S | 1% |
| Wednesday | 91°F | Mostly Sunny then Scattered Showers And Thunderstorms | 3 mph S | 27% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms | 5 mph S | 73% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 3 mph S | 73% |
| Thursday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 2 mph SE | 16% |
| Friday | 88°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 2 mph SW | 17% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 1 mph S | 30% |
| Saturday | 91°F | Chance Showers And Thunderstorms then Mostly Sunny | 2 mph SW | 30% |
| Saturday Night | 72°F | Mostly Clear | 5 mph S | 5% |
| Sunday | 93°F | Sunny | 7 mph SW | 3% |
| Sunday Night | 74°F | Mostly Clear | 6 mph S | 5% |
| Monday | 94°F | Sunny | 7 mph SW | 4% |
| Monday Night | 75°F | Mostly Clear then Slight Chance Rain Showers | 3 to 7 mph SW | 15% |
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
Josephville
Lake St. Louis
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 Aug 4, 2026.