Sumner, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sumner, a town in Chariton County, Missouri.
Overnight
65°F
Mostly Clear
Mostly clear, with a low around 65. Southeast wind around 5 mph.
7-day forecast for Sumner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Mostly Clear | 5 mph SE | 0% |
| Tuesday | 91°F | Sunny | 7 mph S | 5% |
| Tuesday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph ESE | 21% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 3 to 8 mph ESE | 63% |
| Wednesday Night | 65°F | Showers And Thunderstorms Likely | 3 to 8 mph NNE | 85% |
| Thursday | 84°F | Showers And Thunderstorms then Partly Sunny | 6 mph NE | 85% |
| Thursday Night | 65°F | Mostly Clear | 1 to 5 mph ESE | 6% |
| Friday | 87°F | Mostly Sunny | 1 to 7 mph SSE | 13% |
| Friday Night | 68°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 mph S | 16% |
| Saturday | 90°F | Slight Chance Showers And Thunderstorms then Sunny | 2 to 10 mph SSW | 16% |
| Saturday Night | 72°F | Mostly Clear | 9 mph S | 5% |
| Sunday | 93°F | Sunny | 9 to 15 mph SSW | 4% |
| Sunday Night | 73°F | Mostly Clear | 7 to 14 mph SSW | 4% |
| Monday | 93°F | Mostly Sunny | 9 to 16 mph SSW | 4% |
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 Aug 4, 2026.