While Chicagoland was hit with -10 to -20-degree temperatures and -35 to -40-degree wind chills, the regular daily warm up to the high temperature for the day was the record breaker. The official afternoon high temperature at O’Hare was only 1°F, which is the coldest high temperature recorded for a January 1 in Chicago dating back to 1871. The previous record — known as the “record low maximum” — was 5°F held since 1969.
The normal high is 32°F for January 1.
The normal low is 17°F for January 1.
January 1 records
The record high is 65°F (1876)
The record low is -10°F (1969)
The record high minimum is 43°F (1950)
The record low maximum is 1°F (2018)
The record high minimum is the highest low temperature that has ever occurred for a particular day.
The record low maximum is the lowest high temperature that has ever occurred for a particular day.
Early morning temperatures and dangerous wind chills are forecast to repeat on Tuesday morning January 2, 2017, but lower teens are forecast for mid-afternoon.
Another cold front is forecast for early morning hours Wednesday January 3, 2017, with a band of clouds and scattered light snow and flurries lasting from about midnight Tuesday/Wednesday until 5 a.m. Wednesday, and lingering flurries until about 8 a.m. Wednesday.
The snow showers will continue off Lake Michigan into northwest Indiana Thursday.
The below normal cold weather with temperatures averaging nearly 17 degrees below normal is forecast to continue through Saturday with Sunday finally reaching around the normal of 31°F.
Extreme cold start to 2018. 24 hr max and min temps listed. For reference, 1/1 normal highs in low 30s, normal lows in teens. #ilwx #inwx pic.twitter.com/EZKpWxs9fn
— NWS Chicago (@NWSChicago) January 2, 2018
Bitter cold continues through the week. Coldest lows around -20°, -20° to -40° wind chills to start Tuesday. Breezy conditions Tue. afternoon & night will offset slightly higher temps. Snow showers are possible late Tue. night into Wed. AM ahead of next cold front. #ilwx #inwx pic.twitter.com/fv32DAphPf
— NWS Chicago (@NWSChicago) January 2, 2018
Coldest #NewYearsDay on record statistics rundown for #Chicago and #Rockford. #ilwx #chiberia pic.twitter.com/wKwg7DETlW
— NWS Chicago (@NWSChicago) January 2, 2018
Chiberia Morning 2018, minus-6 degrees #chicago #weather #winter #ilwx #news pic.twitter.com/ytrm1y1ct0
— Barry Butler (@barrybutler9) January 1, 2018
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More on the meteorology and origin of this bitter cold air mass, as well as why the sky is often clear in these cases. Be weather-ready to start 2018, and stay bundled! Cold safety: https://t.co/ZvczJw4Nf9 pic.twitter.com/98y4wD1OEj
— NWS Chicago (@NWSChicago) January 1, 2018
CHICAGO: Frigid temperatures continue to reign supreme over the #Chicagoland area setting record lows. Now on @CapturedNews #WinterIsHere#ILwx pic.twitter.com/bDMeYy9WQq
— CapturedNews Shooter (@CNshooter) January 2, 2018