St. Robert, MO Weather & Growing Conditions
Overnight
73°F
Mostly Clear
Mostly clear, with a low around 73. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 73°F | Mostly Clear | 6 mph S | 1% |
| Saturday | 100°F | Sunny | 7 to 12 mph SW | 1% |
| Saturday Night | 72°F | Partly Cloudy | 7 mph SW | 1% |
| Sunday | 95°F | Mostly Sunny then Slight Chance Rain Showers | 3 to 7 mph W | 15% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 2 to 6 mph NE | 74% |
| Monday | 81°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 74% |
| Monday Night | 59°F | Chance Showers And Thunderstorms | 6 to 10 mph N | 40% |
| Tuesday | 73°F | Partly Sunny | 8 to 12 mph N | 14% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 to 12 mph NE | 2% |
| Wednesday | 76°F | Mostly Sunny | 5 to 8 mph NE | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 7 mph NE | 1% |
| Thursday | 79°F | Mostly Sunny | 2 to 7 mph NE | 3% |
| Thursday Night | 56°F | Partly Cloudy then Slight Chance Rain Showers | 2 to 7 mph NE | 15% |
| Friday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 2 to 7 mph E | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Robert, MO
Last spring frost
Apr 15
First fall frost
Oct 21
Growing season
185 days
Hardiness zone
6b
Explore more for St. Robert, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Waynesville 2 W, Mo (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.