Seymour, MO Weather & Growing Conditions
Today
89°F
Sunny
Sunny, with a high near 89. Heat index values as high as 92. South wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 5 to 8 mph S | 0% |
| Tonight | 68°F | Mostly Clear | 6 to 9 mph SE | 0% |
| Wednesday | 92°F | Mostly Sunny then Isolated Showers And Thunderstorms | 9 mph S | 23% |
| Wednesday Night | 70°F | Isolated Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 mph SE | 36% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 7 mph S | 41% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 6 mph S | 50% |
| Friday | 86°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph SW | 60% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 5 mph S | 38% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 6 mph S | 27% |
| Saturday Night | 69°F | Mostly Clear | 7 mph S | 12% |
| Sunday | 89°F | Sunny | 8 mph S | 3% |
| Sunday Night | 70°F | Mostly Clear | 7 mph S | 3% |
| Monday | 90°F | Sunny | 6 to 9 mph S | 3% |
| Monday Night | 70°F | Mostly Clear | 8 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Seymour, MO
Last spring frost
Apr 23
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
6b
Explore more for Seymour, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Ava 6Nw, Mo (9.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.