It may seem more like an infernal equinox.
When spring arrives at 6:02 a.m. Wednesday, it's likely some areas around Chicago will be wincing from wind chills below zero.
And while temperatures will warm up as the week goes along, there are rumblings about another snow storm Sunday night into Monday morning.
The Chicago Weather Center says an intense low pressure system is pulling Arctic air into the Chicago area, powered by wind gusts up to 40 mph.
This morning, temperatures were in the teens and wind chills ranged from -4 in Rochelle to -1 in Aurora to zero at O'Hare International Airport. On Wednesday, the highs will only reach into the 20s. But some overnight wind chills could dip to -5 north of the city, according to the National Weather Service.
Normal for this time of year is the upper 40s. Last year, we were in the middle of a heat wave that saw a record high of 85 on March 20 and another record of 87 on March 21.
Looking ahead, the Chicago Weather Center says one computer model indicates a potential major snow storm for Sunday and Monday. The National Weather Service has only light rain or snow for those days and says it is too early to say if the forecast will worsen.
WGN-TV meteorologist Tom Skilling says nearly three-quarters of Chicago's average snowfall of 37.1 inches comes down in December, January and February. But March is prone to some big storms, and Skilling notes that the month has been the season's snowiest in 22 of the last 128 winters. April 1938, with 13.6 inches, was the snowiest month in Chicago's 1937-38 season.