Chillicothe, MO Weather & Growing Conditions
This Afternoon
91°F
Mostly Sunny
Mostly sunny, with a high near 91. Heat index values as high as 96. South southwest wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Mostly Sunny | 9 mph SSW | 2% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph W | 57% |
| Sunday | 77°F | Chance Showers And Thunderstorms | 3 to 8 mph N | 47% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 9 mph NNE | 53% |
| Monday | 67°F | Showers And Thunderstorms Likely | 8 mph NNE | 53% |
| Monday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph NNE | 20% |
| Tuesday | 64°F | Mostly Cloudy | 8 mph NNE | 5% |
| Tuesday Night | 49°F | Mostly Cloudy | 2 to 6 mph NNE | 5% |
| Wednesday | 67°F | Mostly Sunny | 5 mph NE | 0% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph ENE | 3% |
| Thursday | 72°F | Partly Sunny | 3 mph E | 10% |
| Thursday Night | 57°F | Chance Rain Showers | 2 mph E | 27% |
| Friday | 76°F | Chance Rain Showers | 1 to 5 mph E | 31% |
| Friday Night | 59°F | Mostly Cloudy | 3 mph E | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chillicothe, MO
Last spring frost
Apr 15
First fall frost
Oct 21
Growing season
188 days
Hardiness zone
6a
Explore more for Chillicothe, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Chillicothe Agri-Sci, Mo (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.