Sumner, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sumner, a town in Chariton County, Missouri.
This Afternoon
92°F
Sunny
Sunny, with a high near 92. Heat index values as high as 100. South wind around 7 mph.
7-day forecast for Sumner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 92°F | Sunny | 7 mph S | 8% |
| Tonight | 72°F | Partly Cloudy | 6 mph SSE | 8% |
| Saturday | 93°F | Partly Sunny | 6 to 12 mph SSW | 6% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 7 mph W | 60% |
| Sunday | 80°F | Chance Showers And Thunderstorms | 3 to 9 mph NNW | 41% |
| Sunday Night | 61°F | Showers And Thunderstorms Likely | 6 to 12 mph NNE | 64% |
| Monday | 69°F | Showers And Thunderstorms Likely | 8 to 12 mph NNE | 62% |
| Monday Night | 55°F | Chance Rain Showers | 6 to 12 mph NNE | 43% |
| Tuesday | 66°F | Mostly Cloudy | 10 mph NNE | 7% |
| Tuesday Night | 50°F | Mostly Cloudy | 2 to 9 mph NE | 6% |
| Wednesday | 70°F | Mostly Sunny | 3 to 7 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 1 to 5 mph ENE | 3% |
| Thursday | 72°F | Partly Sunny | 1 to 5 mph ENE | 6% |
| Thursday Night | 55°F | Mostly Cloudy | 3 mph ENE | 10% |
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 Sep 18, 2026.