Areas of frost have occurred in parts of Ohio in late September to early October but the pattern is about to switch again toward a warmer and drier pattern for a decent part of October.
Expect a return to warmer and drier weather for a good part of this month. Temperatures will range from normal to 10 above normal this month but will average 2-5 degrees above normal. We have not had a widespread freeze yet but typically it ranges from Oct. 10-20 for much of the state and it looks like it will be in the later range of normal this year as we discussed a while ago. Rainfall the next two weeks can be seen in the attached image. Most of the wet weather will stay south of Ohio though far southern and eastern Ohio could get clipped by some tropical moisture return to yield near normal rainfall in those areas. Otherwise, rainfall should be below normal.
A pattern change will occur this winter. It appears it will start warmer than normal and then turn colder than normal. Precipitation will also become above wetter than normal.
Spring 2021 Outlook
It looks like a potential cool and damp spring next year if the La Nina lingers than long.
For more information: https://www.cpc.ncep.noaa.gov/