Iirc California has the most "nice" days on average of any state. "Nice" = between around 60°-80°F and Sunny. If you want to spend the whole year outdoors California is the best state to do it in.

Wet bulb temperatures and dew point are what determine how comfortable it is outdoors.

https://en.wikipedia.org/wiki/100th_meridian_west

> In the United States, this meridian roughly marks the boundary between the semi-arid climate in the west and the humid continental and humid subtropical climates in the east and is used as shorthand to refer to that arid-humid boundary.

The average you’re looking for can hide a lot of distributions. Texas gets both extremely hot and cold in a way California does not.