PG&E bills are expected to spike this December amid frigid Bay Area temperatures.
NOVATO, Calif. (KGO) -- Ask anyone, and they'll tell you it's been cold in the Bay Area this month. Energy customers may be getting a shock when they open their PG&E bill.
"It's frigid, very cold, I don't remember it being this cold before," said Yolanda Siegmueller.
It's been gloomy and downrigh…