Festus, MO Weather & Growing Conditions
This Afternoon
99°F
Mostly Sunny
Mostly sunny, with a high near 99. Heat index values as high as 103. Southwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Mostly Sunny | 3 mph SW | 1% |
| Tonight | 72°F | Partly Cloudy | 5 mph SW | 2% |
| Sunday | 95°F | Mostly Sunny | 3 mph W | 2% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 mph NE | 61% |
| Monday | 84°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 7 mph NE | 61% |
| Monday Night | 59°F | Showers And Thunderstorms Likely | 3 to 7 mph N | 61% |
| Tuesday | 74°F | Chance Rain Showers then Mostly Cloudy | 5 to 8 mph N | 27% |
| Tuesday Night | 53°F | Mostly Cloudy | 3 to 8 mph N | 1% |
| Wednesday | 75°F | Mostly Sunny | 6 mph N | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 1 to 5 mph N | 0% |
| Thursday | 77°F | Mostly Sunny | 1 to 5 mph N | 2% |
| Thursday Night | 56°F | Mostly Cloudy | 0 to 3 mph NE | 3% |
| Friday | 80°F | Slight Chance Rain Showers | 1 to 5 mph NE | 17% |
| Friday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph NE | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Festus, MO
Last spring frost
Apr 9
First fall frost
Oct 26
Growing season
197 days
Hardiness zone
6b
Explore more for Festus, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Festus, Mo (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.