Bone-chilling temperatures are being reported throughout the Sacramento region with widespread frost expected to stick around until 10 a.m. this morning.

In downtown Sacramento, the 27 degree reading ties the all-time low for this date, set in 1972. It was even colder at Sacramento Executive airport, where 25 degrees was recorded.

Elsewhere, lows were 28 degrees in Auburn, 27 in Stockton, and 28 in Vacaville.

As cold's grip remains, thousands of Pacific Gas & Electric customers remain without electricity more than 24 hours after Monday's snowstorm knocked out power.

A total of 19,000 customers are still without power in El Dorado County, and fewer than 100 were without power in Placer County. It was estimated that on Monday 36,000 customers were without electricity El Dorado County and 10,000 were in the dark in Placer County.

"Today we will be focused on El Dorado County and try to get a lot of customers there restored," said Brian Swanson, PG&E spokesman. "We will have decent weather conditions to get work done."

Another spokesman said that power outages could extend into the early evening hours tonight in El Dorado County.

Monday's storm that swooped down from the northeast brought cold air from Canada, according to National Weather Service meteorologists. Unlike storms originating in the Gulf of Alaska that warm somewhat over the Pacific Ocean, the weather system that has Northern California in its grips traveled over the colder land mass.

"The ocean is always warmer than the land mass in the wintertime," said Angus Barkhuff.

The high today is expected to be about 46 degrees in Sacramento. Wednesday is expected to extend today's freeze.

"We will have clear skies tonight, so we will have cold temperatures again," said Barkhuff. The high on Wednesday is expected to be about 44 degrees with the overnight low dipping to 31 degrees.

In hard-hit El Dorado County, a snow closure phone recording reports that county offices are scheduled to open at 10 a.m. today. However, the recording for county employees has not been updated since Monday.