Sumner, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sumner, a town in Chariton County, Missouri.
This Afternoon
73°F
Chance Rain Showers
A chance of rain showers before 2pm. Partly sunny. High near 73, with temperatures falling to around 64 in the afternoon. South southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Sumner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Chance Rain Showers | 14 to 18 mph SSW | 43% |
| Tonight | 48°F | Cloudy | 12 mph WSW | 10% |
| Wednesday | 60°F | Mostly Cloudy | 10 to 15 mph W | 7% |
| Wednesday Night | 43°F | Partly Cloudy | 5 to 8 mph WSW | 1% |
| Thursday | 59°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph W | 22% |
| Thursday Night | 42°F | Mostly Cloudy | 6 mph NW | 11% |
| Friday | 58°F | Partly Sunny | 5 to 8 mph NNW | 1% |
| Friday Night | 39°F | Mostly Cloudy | 0 to 3 mph N | 2% |
| Saturday | 59°F | Partly Sunny | 0 to 5 mph WNW | 1% |
| Saturday Night | 38°F | Partly Cloudy | 2 mph W | 3% |
| Sunday | 60°F | Mostly Sunny | 2 to 9 mph W | 5% |
| Sunday Night | 37°F | Mostly Clear | 1 to 5 mph WSW | 3% |
| Monday | 64°F | Sunny | 1 to 7 mph SW | 3% |
| Monday Night | 41°F | Mostly Clear | 2 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Sumner (39.656, -93.243). Updated through the day.
Growing snapshot for Sumner
Last spring frost
Apr 14
First fall frost
Oct 23
Growing season
192 days
Hardiness zone
6a
More local growing data for Sumner: nearby ZIP 64681 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Brookfield, Mo (11.4 mi from Sumner). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.