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

Temperatures on roller coaster this week

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The transition into Spring is under way with an early time change (set clocks ahead one hour today) and the end of astronomical winter now in sight (Spring Equinox is March 20). Huge swings in high temperatures are expected to occur during the week ahead with readings varying as much as 30°. Southwest winds will usher in a big warm up early in the week with high temps Sunday through Wednesday averaging well over 10° above normal. Tuesday should be the warmest day with only extensive cloudiness and a threat of showers holding readings from reaching into the 70s. A cold front will settle south and split the Chicago area Wednesday with a huge temp range from the lower 40s north of the front to perhaps the lower 70s south. Thursday should mark the changeover to cold over the entire area with highs the last two days of the week averaging better than 10° colder than normal.
--By Paul Dailey, WGN Weather Center Meteorologist