I posted less than a week ago about freezing conditions and the expectations for specific locations around our area. To be a bit more visual, i thought i'd also add this national map, provided by The Weather Channel.
According to the map, our region should expect to start seeing frost on the ground by October 15th. The one thing not reflected on here that i think should still be noted is the influence of the warmer lake waters. By October 15th, the lake waters will have lost a lot of their warmth, but an isulation of sorts will still take place, keeping areas of Port Clinton, Huron, and even up north near Monroe, warmer longer.