May and October.
I'd say Spring and Fall, but March is supposedly Spring, and it's my least favorite month...... cold, rainy, cloudy....
November is my other least favorite month, dark, cold, not much sun.
I like the extreme cold in January (10 degrees or less) when there's a coating of crisp, sparkling snow on the ground.
And I do like summer because I love sunshine and no coats and this part of Ohio is particularly lovely..... very rarely too hot....... but May is glorious and October stunning with it's color and the cool air (other than this year).
So May and October it is!
(I'd never move south because the 95 degree/high humidity days in summer keep you inside, and in summer you should be OUTside).