Sumner, MO Weather & Growing Conditions
This Afternoon
71°F
Slight Chance Rain Showers
A slight chance of rain showers before 4pm. Mostly sunny. High near 71, with temperatures falling to around 63 in the afternoon. South southwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Slight Chance Rain Showers | 15 to 18 mph SSW | 18% |
| Tonight | 48°F | Cloudy | 13 mph WSW | 10% |
| Wednesday | 57°F | Mostly Cloudy | 12 to 16 mph W | 7% |
| Wednesday Night | 41°F | Partly Cloudy | 5 to 8 mph WSW | 1% |
| Thursday | 57°F | Partly Sunny then Slight Chance Rain Showers | 6 to 12 mph W | 17% |
| Thursday Night | 41°F | Mostly Cloudy | 3 to 7 mph NW | 7% |
| Friday | 55°F | Partly Sunny | 5 to 9 mph N | 1% |
| Friday Night | 36°F | Mostly Cloudy | 0 to 3 mph N | 2% |
| Saturday | 57°F | Partly Sunny | 0 to 5 mph WNW | 1% |
| Saturday Night | 36°F | Partly Cloudy | 1 mph W | 5% |
| Sunday | 63°F | Sunny | 1 to 7 mph W | 4% |
| Sunday Night | 37°F | Mostly Clear | 3 mph WSW | 1% |
| Monday | 67°F | Sunny | 2 to 10 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 2 to 6 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sumner, MO
Last spring frost
Apr 14
First fall frost
Oct 23
Growing season
192 days
Hardiness zone
6a
Explore more for Sumner, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Brookfield, Mo (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.