Chillicothe, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chillicothe, a city in Ross County, Ohio.
Today
87°F
Sunny
Sunny, with a high near 87. Northeast wind around 5 mph.
7-day forecast for Chillicothe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 5 mph NE | 0% |
| Tonight | 67°F | Mostly Clear | 0 to 3 mph N | 5% |
| Wednesday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 3 mph SW | 46% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 2 mph SW | 36% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 47% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 58% |
| Friday | 86°F | Showers And Thunderstorms | 2 to 7 mph SW | 76% |
| Friday Night | 67°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 6 mph S | 76% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 41% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 41% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms | 1 to 7 mph SW | 18% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 18% |
| Monday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph SW | 28% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 32% |
Forecast source: National Weather Service (api.weather.gov) for Chillicothe (39.341, -82.996). Updated through the day.
Growing snapshot for Chillicothe
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
6b
More local growing data for Chillicothe: nearby ZIP 45601 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Adelphi
Andersonville
Bainbridge
Bourneville
Clarksburg
Frankfort
Kingston
Laurelville
Massieville
Richmond Dale
South Salem
Climate data from the nearest NOAA station, Chillicothe Mound City, Oh (5 mi from Chillicothe). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.