Redding gets hot, but it's a dry heat. There is a great health food store, and a Trader Joe's. There's also a Costco there. It still has a country-like vibe, with big city amenities. Housing is very affordable, people are still nice and friendly. It has tons of outdoorsy stuff to do, with Shasta Lake and Mount Lassen within a short distance.
What else are you looking for? It's an easy 3 hour drive from SF, as long as you don't go during commute hours from/to Sac or Tahoe.