Chillicothe, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chillicothe, a city in Ross County, Ohio.
Tonight
59°F
Partly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 5am. Partly cloudy, with a low around 59. Southeast wind 5 to 8 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Chillicothe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 8 mph SE | 17% |
| Wednesday | 70°F | Showers And Thunderstorms | 8 to 13 mph SE | 100% |
| Wednesday Night | 54°F | Showers And Thunderstorms then Mostly Cloudy | 2 to 12 mph SW | 99% |
| Thursday | 70°F | Mostly Sunny | 2 to 9 mph SW | 2% |
| Thursday Night | 44°F | Partly Cloudy | 0 to 3 mph SW | 1% |
| Friday | 66°F | Partly Sunny | 0 to 7 mph W | 6% |
| Friday Night | 40°F | Partly Cloudy | 5 mph NW | 14% |
| Saturday | 58°F | Mostly Sunny | 3 to 7 mph NW | 14% |
| Saturday Night | 33°F | Partly Cloudy | 2 mph NW | 13% |
| Sunday | 60°F | Mostly Sunny | 1 to 7 mph W | 11% |
| Sunday Night | 33°F | Partly Cloudy then Slight Chance Light Rain | 5 mph W | 15% |
| Monday | 62°F | Slight Chance Light Rain | 3 to 8 mph W | 16% |
| Monday Night | 35°F | Slight Chance Light Rain then Mostly Clear | 6 mph W | 15% |
| Tuesday | 66°F | Mostly Sunny | 5 to 9 mph W | 3% |
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 Nov 4, 2026.