Chicago’s feast of refreshing Canadian air continues for a third day today. On Wednesday, temperatures remained in the comfortable 70s, with nearly unheard of dew points in the 40s. Besides the delightful temperatures and humidity, visibility was especially keen. Chicago’s skyscrapers were clearly visible 25 to 30 miles out into the suburbs.
With time, the air mass slowly warms in the long days of intense July sunshine. Humidity and haze creep into the mix, as more normal summer weather returns on Friday. Thereafter, temperatures and humidity slowly climb, with a slight chance of t-storms returning by Sunday or Monday. For Tuesday and Wednesday, computer models suggest that an upper level disturbance invades from the southwest, with Gulf moisture and widespread rainfall. As a result, temperatures fall off here, while sizzling heat builds in Wisconsin and Minnesota.
WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.
