Napa Valley Goes Under Freeze Warning: National Weather Service

NAPA VALLEY, CA — Much of Napa County was expected to be under a freeze warning from 11 p.m. Thursday until 9 a.m. Friday in the aftermath of a powerful storm that drenched the region Thursday morning, the National Weather Service said.

Parts of Sonoma and Marin counties will also be under freeze warnings and parts of Santa Clara and Alameda counties will be under a freeze watch, the NWS said.

The low temperature in Napa was expected to drop to 30 degrees Thursday night with a windchill of 26 degrees and approaching the record low of 28 set in 1932. Thursday night's overnight low was forecast to be similar across most Napa County communities, according to AccuWeather.

“A freeze is possible for many inland areas on Thursday night into Friday.”

The agency is urging residents to take appropriate measures to protect pets, plants, and pipes from the cold.

The cold temperatures will be accompanied by gusty winds expected to pick up late Thursday and into Friday morning. Gusts were expected to top out in the mid-20 MPH range in many Bay Area communities and hit 30 MPH in Healdsburg, according to the NWS.