The storm system that has been bringing rain to the Portland, Ore., area is weakening, but will bring more rain, some snow and colder air into Thursday.
"Overnight Wednesday, the low temperature will be in the mid- to upper 30s," said AccuWeather Meteorologist Andy Mussoline.
The overnight low on Tuesday was about 15 degrees warmer, at 45 degrees F.
Daytime temperatures on Thursday will struggle to reach the low 50s. Some lingering showers are also possible.
"A few inches of snow could accumulate in the Cascades at altitudes above 2,500 feet," Mussoline said. "Travel over the passes could be slippery early Thursday morning."
Assisted by a southward shift in the polar vortex, temperatures plummeted to their lowest levels in decades in some locations of the Northeast at the start of Valentine's Day.
Enough snow and ice will occur to snarl travel, disrupt daily routines and cause sporadic power outages in a large part of the eastern United States spanning Presidents Day into Tuesday.
A storm will track across portions of the midwestern United States into Sunday night bringing a batch of snow and ice.
Voters heading out to the polls on Saturday, Feb. 20, can expect mild weather and dry conditions for the next step in the 2016 Presidential Election.
Heavy rain will raise the risk of flooding and bring another dose of travel disruptions across more than a dozen states from the lower Mississippi Valley on Presidents Day to the East Coast on Tuesday.
Winter's frigid air can bring with it possible plumbing problems, including frozen pipes.
Roofs collapse: Since noon, Feb. 13th, roofs collapsed at Police Building in Sparta, a tennis court northwest of Grand Rapids, and a bowling alley in Grand Haven due to weight of snow. In western Michigan this is one of the heaviest snow packs in the past 3 decades. Also in the Alpena area, a roof at the Air National Guard Base at Phelps Collins Airport collapsed.
Minneapolis, MN (1993)
Temperature 11.5 degrees above normal so far in February.
McAllen, TX (2000)