Cold temperatures are expected to continue through Monday with some parts of the Bay Area hitting freezing Sunday night, according to the National Weather Service.
A freeze warning was issued Saturday for most of the San Francisco and Monterey Bay regions except for the city of San Francisco itself, according to the weather service.
Temperatures are expected to drop to the 30s near the coast and to the low to mid 20s inland, with the lowest temperatures expected Sunday night, officials said.
The freeze warning is in effect from 2 a.m. to 9 a.m. Sunday and from 10 p.m. Sunday to 9 a.m. on Monday.
Residents are warned to be aware of danger to those living outdoors and to outdoor pets and livestock, as well as to crops and sensitive vegetation.
Officials in the East Bay have warned customers that unprotected water pipes are in danger of freezing.
Some in the Tri-Valley area have already woke up without water this week due to burst pipes, according to the Dublin San Ramon Services District.
The East Bay Municipal Utility District recommends wrapping frozen pipes in a towel and slowly pouring warm, but not boiling, water over them to defrost them. Never use a torch or open flame, officials said.
Homeowners are advised not to try to protect pipes by leaving faucets open, as this wastes water, EBMUD officials said. Instead, they recommend wrapping pipes and shutting off valves to irrigation systems after draining water from the pipes.