Rockville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockville, a city in St. Clair County, Missouri.
Today
93°F
Sunny
Sunny, with a high near 93. Heat index values as high as 97. South wind around 6 mph.
7-day forecast for Rockville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Sunny | 6 mph S | 0% |
| Tonight | 74°F | Partly Cloudy | 5 mph SE | 5% |
| Wednesday | 93°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 22% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms | 6 mph NE | 63% |
| Thursday | 89°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph S | 63% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 3 mph S | 47% |
| Friday | 90°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 47% |
| Friday Night | 71°F | Slight Chance Showers And Thunderstorms | 3 mph S | 19% |
| Saturday | 92°F | Slight Chance Showers And Thunderstorms then Sunny | 3 to 7 mph S | 19% |
| Saturday Night | 73°F | Mostly Clear | 6 mph S | 4% |
| Sunday | 93°F | Sunny | 6 to 10 mph SW | 2% |
| Sunday Night | 74°F | Mostly Clear | 8 mph S | 1% |
| Monday | 94°F | Sunny | 8 to 12 mph SW | 1% |
| Monday Night | 75°F | Mostly Clear | 8 mph S | 1% |
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 Aug 4, 2026.