i'm just saying around my area........they do..............where there is no frost..(which there as been frost).like deep south....maybe a cold front kicks off the rut....don't know about the deep south.......
And if there happens to be no frost or no cold fronts in your area or the deep south - How will they breed??
Just prodding you to think how fickle the weather is how inconsistant or lacking of a true mechanism it would be.
If weather was the true or even major predictor - I could foresee years with no rut and no young being born.