Warrenton, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Warrenton, a city in Warren County, Missouri.
Overnight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. South wind around 6 mph.
7-day forecast for Warrenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Partly Cloudy | 6 mph S | 7% |
| Saturday | 96°F | Partly Sunny | 6 mph SW | 5% |
| Saturday Night | 71°F | Partly Cloudy | 3 mph SW | 11% |
| Sunday | 90°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 mph W | 35% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NE | 70% |
| Monday | 76°F | Showers And Thunderstorms Likely | 6 mph NE | 70% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 6 mph N | 50% |
| Tuesday | 69°F | Slight Chance Rain Showers then Mostly Cloudy | 7 mph N | 22% |
| Tuesday Night | 52°F | Mostly Cloudy | 2 to 6 mph N | 5% |
| Wednesday | 73°F | Mostly Sunny | 5 mph N | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 3 mph NE | 1% |
| Thursday | 75°F | Mostly Sunny | 3 mph NE | 4% |
| Thursday Night | 56°F | Partly Cloudy | 2 mph NE | 3% |
| Friday | 75°F | Mostly Sunny | 3 mph NE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Warrenton (38.819, -91.138). Updated through the day.
Growing snapshot for Warrenton
Last spring frost
Apr 14
First fall frost
Oct 23
Growing season
191 days
Hardiness zone
6b
More local growing data for Warrenton: nearby ZIP 63380 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Warrenton 1 N, Mo (1.7 mi from Warrenton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.