Too hot or too cool

I’m a fair weather kind of person; I’m happier when it is sunny and warm. Lately this has started to change a little bit (not the sunny part, the warm part). Since getting back from vacation, I’ve gone on 3 training runs where it has been over 70 degrees out. I’m not sure if it is that I haven’t trained in a week (I went on 1 out of 4 runs while on vacation), but my performance was pretty poor. Yesterday’s run, I had over a 9 minute mile which isn’t the norm for me. I think I need to get up at the crack of dawn (when my wife leaves for work) and run then otherwise training is going to be a nightmare as the temperature increases.