An article from January 6th states that Chicago had it's cloudiest open to January since 1992 (followed by the Pinatubo-induced cold summer later that year).
https://wgntv.com/tom-skilling-2/brace-for-a-cloudy-cold-and-breezy-weekend/
As of January 20th, possible sunshine for Chicago is only 19%. Chicago's cloudiest January on record was in 1998 with only 20% of possible sunshine. Today was Chicago's 7th consecutive day without sunshine. Based on how the upcoming week is going to be, Chicago may very well break the January record for lowest sunshine this month.
https://wgntv.com/weather/weather-blog/a-mild-work-week-without-sunshine-and-the-potential-for-measurable-snow/
Top 5 Least Sunniest Januaries in Chicago:
1(T). 1998 - 20%
1(T). 2023 - 20% (as of 1/20)
3. 2017 - 23%
4(T). 2014 - 25%
4(T). 2020 - 25%
Top 10 Greatest number of days in January with 0% sunshine for Chicago:
1. 1998 - 20 days
2(T). 1932 -16 days
2(T). 1969 - 16 days
2(T). 2017 - 16 days
2(T). 2020 - 16 days
2(T). 2021 - 16 days
7. 1963 - 15 days
8(T). 1914 - 14 days
8(T). 1992 - 14 days
10. 1911 - 13 days https://wgntv.com/weather/weather-blog/mild-relatively-snowless-and-cloudy-january-continues-snow-chances-for-chicago-this-weekend-and-mid-week/
Even in Chicago, just not our month for sunshine.