Friday is expected to be this year's coldest day so far, with a wind chill advisory lasting until noon.
Thursday's high temperatures peaked at 18 degrees in the early morning, with area experiencing a steady decrease in temperatures throughout the day, said meteorologist Tim Gross of the National Weather Service.
Overnight temperatures were expected to fall below zero for the first time since Jan. 22, he said. Temperatures may drop to 4 below zero and, fueled by winds of 10 to 20 miles per hour, create a wind chill estimated to be as low as 25 degrees below zero.
Despite mostly sunny skies Friday, temperatures are expected to max out at 13 degrees. This pales in comparison to the record low of 21 degrees below zero set in 1996, yet it remains lower than the average highs of the low 30s for the end of January, Mr. Gross said.
The phenomenon of colder temperatures after a snowfall is commonly attributed to snow's high "albedo," the intensity at which something reflects light and radiation from the sun, Mr. Gross explained. This radiation is "bounced" back into the atmosphere rather than warming the earth, he added.
Once the snow melts sometime next week, temperatures are expected to return to normal, the meteorologist said.
Today is Monday, July 28, the 209th day of 2014. There are 156 days left in the year.
1864 -- 150 years ago: Port Byron passengers and mails will be transported by the Sterling and Rock Island railroad. 1889 -- 125 years ago: The congregation of the First Methodist church worshiped in Harper's theater, where construction work is being done at the church site. 1914 -- 100 years ago: Three-eye baseball for Moline was assured the Danville Franchise will be transferred to the Plow city. 1939 -- 75 years ago: Roseville Methodist Church is observing its 100th anniversary. 1964 -- 50 years ago: The last remaining unfinished portion of Interstate 80 between the Quad-Cities and Joliet will be opened to traffic by Aug 12. 1989 -- 25 years ago: Of all the highlights of the last 12 years, this is the greatest of all, said Dennis Hitchcock, producer director of Circa '21 Dinner Playhouse, as he torched the mortgage, clearing a $220,000 loan financing the downtown Rock Island theater's beginnings in 1977.