I live in Southern CA and feel this area meets your criteria.

1. We have Lots of paved bike trails throughout So Cal.
2. We have days in the 65 to 85 degree range almost all year
3. Scenery.....gotta say So Cal Rocks.....just go for a ride along the beach and you'll see lots of good scenery..And I'm not talking about landscape scenery...I'm talking about FEMALE SCENERY! but being serious, I think you find the So Cal scenery on the good side.