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 Patchy Fog
Patchy fog after 3am. Partly cloudy, with a low around 59. North wind 1 to 6 mph.
7-day forecast for Chillicothe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Partly Cloudy then Patchy Fog | 1 to 6 mph N | 2% |
| Saturday | 83°F | Areas Of Fog then Mostly Sunny | 3 mph E | 11% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 3 mph S | 58% |
| Sunday | 84°F | Showers And Thunderstorms Likely | 6 mph SW | 63% |
| Sunday Night | 63°F | Showers And Thunderstorms Likely | 6 mph N | 63% |
| Monday | 76°F | Chance Rain Showers | 5 to 8 mph NE | 42% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 51% |
| Tuesday | 74°F | Chance Showers And Thunderstorms | 8 mph NE | 51% |
| Tuesday Night | 60°F | Showers And Thunderstorms Likely | 5 to 9 mph NE | 59% |
| Wednesday | 73°F | Rain Showers Likely | 8 mph NE | 59% |
| Wednesday Night | 56°F | Showers And Thunderstorms Likely | 3 to 7 mph NE | 55% |
| Thursday | 73°F | Slight Chance Rain Showers | 7 mph N | 17% |
| Thursday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 7 mph N | 17% |
| Friday | 73°F | Partly Sunny | 3 to 7 mph N | 7% |
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 Sep 19, 2026.