Best month to find renters

[Joe Doman]

I recently found out that my tenants of 3 years will be moving out in October (hate to see them go) which seems to be of a rough month to find tenants as families are already settled in for the school year and it is getting colder etc... my plan is  to negotiate a term with the next tenants to push the ending date out to a more renter friendly month. Anyone have suggestions on the most active month for renters? 

I'm in the canton/plymouth mi market, top notch school systems, maybe mid summer to catch young families?

Appreciate any advice...