Yeah, it's been really hot here the last few days. Truly, it's not that bad on a regular basis - perhaps 10 days a year it's very uncomfortable. I'm not sure where you ended up, but unless you're in Walnut Creek/Pleasanton, you'll honestly be fine without AC (if you are east of the hills, um, hell no - you need central AC).
Do you have regular central heating? If so, can you turn just the fan on? We find that helps a tremendous amount, as it draws cool air up from under the house. Other coping strategies: have a cool shower right before bed, and invest in a wading pool!