Rockville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockville, a city in St. Clair County, Missouri.
Overnight
74°F
Mostly Clear
Mostly clear, with a low around 74. South wind around 6 mph.
7-day forecast for Rockville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 74°F | Mostly Clear | 6 mph S | 0% |
| Saturday | 96°F | Sunny | 6 to 13 mph SW | 1% |
| Saturday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 2 to 8 mph W | 40% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 5 mph W | 48% |
| Sunday Night | 65°F | Showers And Thunderstorms | 5 mph N | 79% |
| Monday | 76°F | Showers And Thunderstorms | 3 to 9 mph N | 79% |
| Monday Night | 57°F | Mostly Cloudy | 5 to 9 mph N | 10% |
| Tuesday | 72°F | Partly Sunny | 8 mph N | 2% |
| Tuesday Night | 52°F | Partly Cloudy | 3 to 8 mph NE | 1% |
| Wednesday | 74°F | Sunny | 6 mph NE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph NE | 2% |
| Thursday | 78°F | Mostly Sunny | 5 mph E | 9% |
| Thursday Night | 58°F | Slight Chance Rain Showers | 3 mph E | 15% |
| Friday | 79°F | Slight Chance Rain Showers | 5 mph E | 19% |
Forecast source: National Weather Service (api.weather.gov) for Rockville (38.072, -94.080). Updated through the day.
Growing snapshot for Rockville
Last spring frost
Apr 7
First fall frost
Oct 29
Growing season
202 days
Hardiness zone
6b
More local growing data for Rockville: nearby ZIP 64780 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Appleton City, Mo (8.9 mi from Rockville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.