Chicagoans awoke to a deep chill Tuesday morning with a freeze warning overnight and the possibility of early evening snowfall.

That possibility turned into a reality in the early afternoon when snow began to fall around 12:20 p.m. at Midway Airport and continued through 12:40 p.m. before it changed to rain, according to the Chicago Weather Center. Snowfall was also reported at O'Hare Airport and a number of west and southwest suburbs Tuesday.

Meteorologists previously said a first snow of the season was most likely along the I-80 corridor around 6 p.m. Tuesday. Any snow will likely be a wintry mix with rain, making for a "light slushy accumulation" on the ground, (so, not quite graupel) National Weather Service meteorologist Matt Friedlein told the Tribune.

The south and southwest suburbs stood a greater chance of seeing the white stuff Tuesday, while those living north of the city will only have the blast of cold air ripping through the area: A Tuesday high of 45 degrees in the city will drop down below freezing by evening, CBS Chicago reports.

Chicago's been snow-free since April 19 when AccuWeather says "a measly 0.1 of an inch was recorded." AccuWeather says while October snowfall isn't impossible, it is rare.

The last time the city recorded measurable October snowfall was Oct. 12, 2006 -- 0.3 inches -- which remains the city's all-time earliest measurable snowfall.

Last year, Chicago went until Nov. 12 before seeing any snow with the first measurable snowfall holding out until Dec. 20.

This story was updated to reflect reports of area snowfall Tuesday afternoon.

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  • In this Dec. 14, 2013 photo provided by the Chicago Zoological Society, Everest, a 6-month-old Snow Leopard cub, left, plays in the snow with his mother, Sarani. Everest, Sarani, along with father, Sabu, can be seen in the zoo’s “Big Cats” exhibit. (AP Photo/Chicago Zoological Society, Jim Schulz)

  • Several inches of snow covers along a lakeshore trail Saturday, Dec. 14, 2013, in Chicago. A late-autumn storm dumped more than half a foot of snow on parts of central Illinois overnight. (AP Photo/Kiichiro Sato)

  • A woman carries her luggage on the sidewalk on Saturday, Dec. 14, 2013., in Evanston, Ill. Snow continued to fall over the Chicago area into northwest Indiana. (AP Photo/Nam Y. Huh)

  • People walk around the Millennium Park as a snow storm passes through the region Tuesday, March 5, 2013, in Chicago. Chicago was hit Tuesday by a storm expected to dump as much as 10 inches of snow in the area before the end of the day — the most since the 2011 blizzard and its more than 20 inches of snow. (AP Photo/Kiichiro Sato)

  • A commuter walks across a Chicago River bridge as a snow storm passes through downtown Chicago Tuesday, March 5, 2013. Chicago was hit Tuesday by a storm expected to dump as much as 10 inches of snow in the area before the end of the day — the most since the 2011 blizzard and its more than 20 inches of snow. (AP Photo/Kiichiro Sato)

  • Commuters walk during a snow storm as they arrive in downtown Chicago Tuesday, March 5, 2013. Chicago was hit by a storm expected to dump as much as 10 inches of snow in the area before the end of the day, the most since the 2011 blizzard and its more than 20 inches of snow. (AP Photo/Kiichiro Sato)

  • Commuters wait for a bus Tuesday, March 5, 2013 in Chicago during the start of a snow storm. Chicago was hit by a storm expected to dump as much as 10 inches of snow in the area before the end of the day, the most since the 2011 blizzard and its more than 20 inches of snow. (AP Photo/Kiichiro Sato)

  • Snow covers the school buses in the parking lots in Chicago, Tuesday, March 5, 2013. The brunt of the season's biggest storm was hitting Chicago just in time for the evening commute, with around half a foot of snow already on the ground as more than 1,000 flights were canceled and hundreds of schools were closed for the day. (AP Photo/Nam Y. Huh)

  • Snow covers cars parked in the parking lots at O'Hare International Airport in Chicago, Tuesday, March 5, 2013. A late winter storm packing up to 10 inches of snow sent officials in weather-hardened Chicago into action Tuesday to prevent a repeat of scenes from two years ago, when hundreds of people in cars and buses were stranded on the city's marquee thoroughfare during a massive blizzard. (AP Photo/Nam Y. Huh)

  • Travelers make their way past snow-covered cars parked in the parking lot at O'Hare International Airport in Chicago, Tuesday, March 5, 2013. A late winter storm packing up to 10 inches of snow sent officials in weather-hardened Chicago into action Tuesday to prevent a repeat of scenes from two years ago, when hundreds of people in cars and buses were stranded on the city's marquee thoroughfare during a massive blizzard. (AP Photo/Nam Y. Huh)

  • Diana Stewart

    Diana Stewart carries her luggage case in the parking lots O'Hare International Airport in Chicago, Tuesday, March 5, 2013. A late winter storm packing up to 10 inches of snow sent officials in weather-hardened Chicago into action Tuesday to prevent a repeat of scenes from two years ago, when hundreds of people in cars and buses were stranded on the city's marquee thoroughfare during a massive blizzard. (AP Photo/Nam Y. Huh)

  • A man walks around the Millennium Park as a snow storm passes through the region Tuesday, March 5, 2013, in Chicago. Chicago was hit Tuesday by a storm expected to dump as much as 10 inches of snow in the area before the end of the day — the most since the 2011 blizzard and its more than 20 inches of snow. (AP Photo/Kiichiro Sato)

  • An El train runs through Chicago's downtown loop as a snow storm passes through the region Tuesday, March 5, 2013. Chicago was hit Tuesday by a storm expected to dump as much as 10 inches of snow in the area before the end of the day — the most since the 2011 blizzard and its more than 20 inches of snow. (AP Photo/Kiichiro Sato)

  • Jack Swindells, Connor Allen

    Rolling Meadows High School students Jack Swindells, 14, and Connor Allen, 15, walkwith their heads down to shield themselves from the blowing snow in Arlington Heights, Ill., Tuesday, Feb. 26, 2013. The students were dismissed early as a winter storm moved through the Northwest suburbs of Chicago. (AP Photo/Daily Herald, Mark Welsh)

  • Fresh snow covers Anish Kapoor's sculpture "Cloud Gate" and gives it the appearance of a cracked egg as a lone pedestrian walks around the stainless steel attraction in Chicago's Millennium Park, as a winter storm of rain and snow begins Tuesday, Feb. 26, 2013. Forecasters expect the storm to leave behind three to six inches of snow in the greater Chicago area. (AP Photo/Charles Rex Arbogast)

  • A man shovels snow at his home in Glenview, Ill., Wednesday, Feb. 27, 2013. The storm that socked the Chicago area with the season's biggest snowfall has tapered off, but it's not completely finished. Snow will continue falling periodically today, dropping another inch or two in the city and up to three inches in the northern suburbs, according to the National Weather Service. (AP Photo/Nam Y. Huh)

  • Snow covers the cars parked in the parking lots at O'Hare International Airport in Chicago, Wednesday, Feb. 27, 2013. The storm that socked the Chicago area with the season's biggest snowfall has tapered off, but it's not completely finished. Snow will continue falling periodically today, dropping another inch or two in the city and up to three inches in the northern suburbs, according to the National Weather Service. (AP Photo/Nam Y. Huh)

  • With the Chicago skyline as a back drop, the swirling waves of Lake Michigan are frozen near the Adler Planetarium after a winter storm dumped between three to five inches of snow in the greater Chicago area. Friday, Feb. 22, 2013. (AP Photo/Charles Rex Arbogast)

  • A man walks with his dog next to the snow-covered Lake Michigan in Chicago on Friday, Feb. 22, 2013. Gusty winds and iced-over roadways made for treacherous Midwest travel Friday as a major winter storm headed east over the Great Lakes. (AP Photo/Nam Y. Huh)

  • A lone man walks along the waters edge of Lake Michigan at Chicago's Monroe Harbor after a winter storm dumped between three to five inches of snow in the greater Chicago area. Friday, Feb. 22, 2013. (AP Photo/Charles Rex Arbogast)

  • A woman walks on a snow-covered sidewalk in Chicago on Friday, Feb. 22, 2013. Gusty winds and iced-over roadways made for treacherous Midwest travel Friday as a major winter storm headed east over the Great Lakes. (AP Photo/Nam Y. Huh)

  • A jogger jogs in the snow-covered at Lake Michigan in Chicago, Wednesday, Feb. 6, 2013. The National Weather Service has issued a winter storm watch for Lake and McHenry counties for most of Thursday, with freezing rain, sleet and snow possibly stretching over the morning and evening commutes. (AP Photo/Nam Y. Huh)

  • A kid enjoys a snow sled in the snow-covered at Lake Michigan in Chicago, Wednesday, Feb. 6, 2013. The National Weather Service has issued a winter storm watch for Lake and McHenry counties for most of Thursday, with freezing rain, sleet and snow possibly stretching over the morning and evening commutes. (AP Photo/Nam Y. Huh)

  • Gavin Han

    Gavin Han, left, hold a snow sled as he walks in the snow-covered at Lake Michigan in Chicago, Wednesday, Feb. 6, 2013. The National Weather Service has issued a winter storm watch for Lake and McHenry counties for most of Thursday, with freezing rain, sleet and snow possibly stretching over the morning and evening commutes. (AP Photo/Nam Y. Huh)

  • Cody Vibaker

    Cody Vibaker cleans snow in front of his garage during a snow day in Chicago, Monday, Feb. 4, 2013. (AP Photo/Nam Y. Huh)

  • Ice floats on the Lake Michigan during a cold day in downtown Chicago, Friday, Feb.1, 2013. A February hasn’t opened this cold here in the 17 years since 1996. The combination of bitterly cold temperatures, hovering at daybreak Friday near or below zero in many corners of the metro area, plus the biting west winds gusting as high as 30 mph, are producing 15 to 25-below zero wind chills, readings as challenging as any Chicagoans have encountered this season. (AP Photo/Nam Y. Huh)

  • Chicago downtown is seen through Icicles during a cold weather day in Lake Shore Drive in Chicago, Friday, Feb.1, 2013. A February hasn’t opened this cold here in the 17 years since 1996. The combination of bitterly cold temperatures, hovering at daybreak Friday near or below zero in many corners of the metro area, plus the biting west winds gusting as high as 30 mph, are producing 15 to 25-below zero wind chills, readings as challenging as any Chicagoans have encountered this season. (AP Photo/Nam Y. Huh)

  • A woman takes a walk with her dog in the snow-covered at Lake Michigan in Chicago, Sunday, Feb. 3, 2013. A fast-moving clipper system is expected to move southeast across the Midwest tonight on a track south of Chicago and is expected to deliver a significant snowfall in the 2 to 5 inch range, with the heaviest amounts across the north portions of the Chicago Metro area, mainly north and east of a line from Rockford to Valparaiso. (AP Photo/Nam Y. Huh)

  • Fresh snow sticks to the polished, curved stainless steel surface of the Annish Kapoor sculpture Cloud Gate as tourists walk by and have their picture taken in the reflection during a snow storm in Chicago's Millennium Park Thursday, Dec. 27, 2012. (AP Photo/Charles Rex Arbogast)

  • A lone runner navigates the bike path through a snow storm at Chicago's North Ave. beach Thursday, Dec. 27, 2012. Winter storms that in recent weeks have pounded the Midwest and eastern U.S. don’t come close to erasing the harm of the nation’s worst drought in decades, making snowfall and its eventual melt-off more crucial than ever as drought still grips more than 60 percent of the continental U.S. much as it has since July. (AP Photo/Charles Rex Arbogast)

  • A lone cyclist navigates the bike path through a snow storm at Chicago's North Ave. beach Thursday, Dec. 27, 2012. A muted version of the deadly winter storm that has killed more than a dozen across the eastern half of the country reached the Northeast on Thursday, limiting most of its wrath to travel headaches as Christmas revelers tried to return home. (AP Photo/Charles Rex Arbogast)

  • A man holds his shoes as he skates on the sidewalk as snow falls in Chicago, Saturday, Jan. 5, 2013. Weather forecasters say dry weather will dominate early next week before a storm moves into the Midwest, likely bringing Chicago more rain than snow. (AP Photo/Nam Y. Huh)

  • People clean the snow at front of a house in Chicago, Friday, Dec. 28, 2012. As of 6 a.m. today, just .04 tenths of an inch of snow had been recorded at O'Hare International Airport for the entire season. That's less than the .05 tenths of an inch boasted so far by Dallas, according to the National Weather Service. (AP Photo/Nam Y. Huh)

  • A jogger runs on the sidewalk during snowfall in Chicago, Friday, Dec. 28, 2012. As of 6 a.m. today, just .04 tenths of an inch of snow had been recorded at O'Hare International Airport for the entire season. That's less than the .05 tenths of an inch boasted so far by Dallas, according to the National Weather Service. (AP Photo/Nam Y. Huh)

  • People skate on an ice rink in Chicago, Sunday, Dec. 30, 2012. Snow and cold have been lacking in Chicago recently and one of the city's winterless weather streaks has now tied an all-time record. (AP Photo/Nam Y. Huh)

  • People skate on an ice rink in Chicago, Sunday, Dec. 30, 2012. Snow and cold have been lacking in Chicago recently and one of the city's winterless weather streaks has now tied an all-time record. (AP Photo/Nam Y. Huh)

  • In this Feb. 2, 2011 file photo, hundreds of cars are seen stranded on Lake Shore Drive Wednesday, Feb. 2, 2011 in Chicago. A winter blizzard of historic proportions wobbled an otherwise snow-tough Chicago, stranding hundreds of drivers for up to 12 hours overnight on the city's showcase lakeshore thoroughfare and giving many city schoolchildren their first ever snow day. A year later temperatures are in the mid 50's and flirting with record highs for this date. (AP Photo/Kiichiro Sato,File)

  • Commuters walk toward a rail station as the snow continues to accumulate in downtown Chicago Friday, Jan. 20, 2012. (AP Photo/Kiichiro Sato)

  • Commuters walk toward a rail station as the snow continues to accumulate in downtown Chicago Friday, Jan. 20, 2012. (AP Photo/Kiichiro Sato)

  • In this Feb. 2, 2011 file photo, hundreds of cars are seen stranded on Lake Shore Drive in Chicago after a winter blizzard of historic proportions wobbled an otherwise snow-tough Chicago. (AP Photo/Kiichiro Sato, File)

  • A tow truck is seen on Lake Shore Drive in Chicago where hundreds of cars are stranded Wednesday, Feb. 2, 2011. (AP Photo/Kiichiro Sato)

  • Hundreds of cars are seen stranded on Lake Shore Drive, Wednesday, Feb. 2, 2011 in Chicago. A winter blizzard of historic proportions wobbled an otherwise snow-tough Chicago, stranding hundreds of drivers for up to 12 hours overnight on the city's showcase lakeshore thoroughfare and giving many city schoolchildren their first ever snow day. (AP Photo/Kiichiro Sato)

  • David Gonzali, right, shovels his car out from under a snow bank, as others remain buried after a blizzard Wednesday, Feb. 2, 2011 in Chicago. Official say over 20 inches fell in the greater Chicago area during a 24 hour period. (AP Photo/Charles Rex Arbogast)

  • Snow and ice covered Lake Michigan Wednesday, Feb. 2, 2011 in Chicago. (AP Photo/Kiichiro Sato)

  • A commuter waits under heat lamps on an elevated train track during a blizzard Wednesday, Feb. 2, 2011 in Chicago. (AP Photo/Charles Rex Arbogast)

  • High winds swirl the snow on an elevated train platform as Larry Roa waits for a train during a blizzard Wednesday, Feb. 2, 2011 in Chicago. (AP Photo/Charles Rex Arbogast)

  • An early morning pedestrian walks under the elevated tracks on Wabash Ave, Wednesday, Feb. 2, 2011, after a blizzard dumped nearly 20 inches of snow overnight in Chicago. (AP Photo/M. Spencer Green)

  • A pedestrian walks along the Chicago River, Wednesday, Feb. 2, 2011, in Chicago after a blizzard dumped nearly 20 inches of snow on the area overnight. (AP Photo/M. Spencer Green)

  • Winter Wonderland in back yard

    <a href="http://www.huffingtonpost.com/social/OgreDaddy"><img style="float:left;padding-right:6px !important;" src="http://i.huffpost.com/profiles/49598-2-tiny.png?20091220063318" /></a><a href="http://www.huffingtonpost.com/social/OgreDaddy">OgreDaddy</a>:<br />A view from the kitchen window overlooking Harper's Ferry WVA of in the distance

  • Douglas Firs Strain To Hold On After 27" Snow

    <a href="http://www.huffingtonpost.com/social/OgreDaddy"><img style="float:left;padding-right:6px !important;" src="http://i.huffpost.com/profiles/49598-2-tiny.png?20091220063318" /></a><a href="http://www.huffingtonpost.com/social/OgreDaddy">OgreDaddy</a>:<br />Winter Wonderland with Douglas Firs Straining to carry the burden after 27" on fresh snow.