If I'm going outside, sunny and warm (but not too hot). If I'm inside, my absolute favourite is storm weather because you can be all nice and cosy while outside isn't!
There's no snow where I live now, but I actually really like it.
I guess where I'm living now, cool is good. Though, it's hot all the time here, unfortunately.
I like cloudy days so it isn't too bright or too hot. I also like stormy days, windy days, and warm days.
I think a favorite of mine are those afternoons and or evenings in the summer or spring that are warm with those really tall white mountainous clouds in the sky. Where I live it is flat with open sky so it is a nice sight to see. They tend to show up a day or hours before storms come.