As long as you go before the So Cal APs are allowed back, you will be fine.
And as a general rule, August isn't any hotter than July or June, or September. The summers here are rather mild and steady, by the standards of the east coast. We don't have a particular "hot" month. Summer is warmer on average than fall and spring, but not by extremes, unless there is a specific heat wave, which we have had twice this summer, lasting only a few days each time.
It's been in the low-mid 80's the past week here. Nothing crazy. Although, it has been unusually humid, but that's due to a couple tropical systems in the Pacific throwing some moisture in the air our way.