WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.

Any snowflakes here would be the latest in 11 years

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We’re heading into the 17th weekend of 2005—a time of year when highs ought be in the low 60s. Yet, Chicago’s predicted temps Saturday and Sunday will hold to just 41° and 45°—readings which are cooler than the 41° and 54° highs which occurred back on Jan. 1-2, the year’s first weekend.
This puts the area in rare temperature territory. Together with Friday’s 46°, additional 40s both Saturday and Sunday mean the city is in the midst of a three-day string of 40s. That doesn’t happen often. The infrequency with which three consecutive days in late April hold to the 40s is clear from Chicago weather records. Only four such periods have been recorded here since 1940.
These unseasonably chilly temperatures along with cloud-level readings only in the teens and low 20s mean at least some of the snowflakes which form in these clouds may survive the trip down to ground level. If so, they would be the first so late in a season since 1994.