Good morning, Bay Area, and welcome to a shortened holiday workweek. Starting your Monday with utility news, thousands of PG&E customers primarily in the East and South Bay regions were without electricity Sunday night due to hotter-than-usual temperatures, topping 100 degrees in some areas over the weekend. Of course, here in the city, especially in the evening, there is a completely different foggy reality. And for all those staying in the city on Tuesday for San Francisco's official fireworks…