Warrenton, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Warrenton, a city in Warren County, Missouri.
This Afternoon
73°F
Light Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 73, with temperatures falling to around 66 in the afternoon. South wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
7-day forecast for Warrenton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Light Rain | 16 mph S | 84% |
| Tonight | 50°F | Light Rain Likely then Chance Rain Showers | 6 to 10 mph SW | 64% |
| Wednesday | 60°F | Mostly Cloudy | 7 to 12 mph W | 3% |
| Wednesday Night | 40°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 62°F | Sunny | 3 to 9 mph W | 6% |
| Thursday Night | 41°F | Mostly Cloudy | 5 mph NW | 12% |
| Friday | 56°F | Mostly Cloudy | 3 to 7 mph NW | 4% |
| Friday Night | 36°F | Mostly Cloudy | 2 mph N | 1% |
| Saturday | 55°F | Partly Sunny | 2 mph NW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 2 mph NW | 3% |
| Sunday | 61°F | Sunny | 5 mph W | 8% |
| Sunday Night | 35°F | Mostly Clear | 2 mph W | 3% |
| Monday | 65°F | Sunny | 2 to 6 mph SW | 2% |
| Monday Night | 40°F | Mostly Clear | 3 mph SW | 1% |
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 Nov 4, 2026.