Winds picked up out of the south-southwest Saturday, the fog lifted and the sun broke out, allowing afternoon temperatures to warm into the upper 50s and lower 60s area-wide.
The high of 59-degrees recorded at Chicago’s official observing site at O’Hare International Airport ended up just 3-degrees shy of the record January 21 high of 62-degrees set back 111 years ago in 1906.
Readings hit 59-degrees in the Loop and 58-degrees Waukegan, right up to the shoreline, where a 25-degree contrast in temperatures existed adjacent to the cold 34-degree Lake Michigan waters. The warm moist air flowing over the lake created dense fog just off-shore.
Patchy dense fog was expected to develop again Saturday night before slowly dispersing Sunday forenoon. With low pressure passing to the south, clouds and northeast winds were expected to prevail Sunday afternoon with the on-shore flow off Lake Michigan holding lakefront highs in the 30s, some 20 to 25-degrees colder than Saturday.