Ohio climate almanac
Ohio's climate, read through its 51 NOAA stations, is mainly mild humid continental (northeast, midwest, pacific northwest). The mean frost-free season runs from about April 24 to October 21, roughly 181 days.
Stations 51 NOAA 1991-2020 normals
Mean frost-free season 181 days 157 to 217 across the state
Typical frost window April 24 - October 21 Median last and first frost
Main climate types 1 Mild humid continental (Northeast, Midwest, Pacific Northwest) (51)
What this means for your home
In Ohio, the difference between the shortest and longest frost-free pockets is 60 days. That is the difference between a tomato crop that struggles and one that runs into October, between one fertilizer timing and another. Set your place above to tune every date to your nearest station.
Major cities in Ohio
Pick a city to see its frost and planting dates, or set your own place above.