I live in Kansas and it starts to turn cold enough to need the heater around the end of October and really starts to get cold in November.
Then it starts to warm back up in Kansas around March but can take until April or even may before we're truly out of the cold weather.
Right now it's October 24th 2017 and it got to 41 F last night and is currently 46 F. The high today is supposed to be 62 F which will be nice.
Then it's supposed to be 79 F tomorrow. The weather here in Kansas can change from cold to warm even in the Fall.
Right now i'm running the heat and last night I was using the heater as well. And tonight I will be turning the heat on again but tomorrow it will be a nice day without using the heat.
The weather can't make up it's mind whether to be hot or cold or warm. But I'll take the few warm days we have coming before it starts to stay consistently cold all the time.