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.
> 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.
