Temps drop into the 20s and more cold weather on the way

The North Bay shivered Wednesday morning with below freezing temperatures including 29 degrees at the Charles M. Schulz-Sonoma County Airport.
That's cold, but practically a heat wave compared to the 8 degrees below zero in Truckee Wednesday or the 20 below zero in a northern Idaho town.

The coldest spot going Wednesday was 35 below in Calgary, Canada.

But that's there.

Here in California it's a Thanksgiving week cold snap due to last until about Saturday when the morning low could rise to about 40 degrees.

Rain also is due back on Saturday, possibly up to an inch in areas, according to forecasts.

“Cold, colder. It's going to be cold,” said Steve Anderson, meteorologist forecaster at the National Weather Service.

This arctic blast from Canada is leaving a trail of frost across the West.

By about 8:30 a.m. Wednesday it had warmed to an official freezing level of 32 degrees at the airport at Windsor.

Around Sonoma County, temperatures reported to the weather service by a residents included Healdsburg, 29 degrees, Santa Rosa with a range of 27-33 degrees in different neighborhoods, Rohnert Park with 28.

A Monte Rio resident had 25 degrees and a report of frost on the roof.

In Sebastopol, one weather watcher recorded 29 degrees and a comment: “Clear, cold, calm and frozen this morning. Heading for the Sierra but we really don't need to.”

Thursday, Thanksgiving morning, should be colder than Wednesday.

Possible record-breaking temperatures will occur in the North Bay. Santa Rosa's record for Nov. 25, is 27 degrees set in 1952. Anderson expected the forecast for the morning's low will end up beating that.

Wednesday's record low for Santa Rosa was 24 degrees set in 1931. “We're not in danger of breaking that record,” he said.