Frost Overnight, Early Tomorrow Morning

Tonight: Areas of frost after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 34. Northeast wind between 5 and 10 mph becoming calm.

Wednesday: Areas of frost before 7am. Otherwise, sunny, with a high near 59. North northwest wind between 5 and 10 mph.

The lowest temperatures are forecast between 3:00 a.m. and 5:00 a.m. Wednesday, May 4, 2011.

The record low for May 3rd at Chicago O’Hare International Airport is 30°F (2004).

The record low for May 4th at Chicago O’Hare International Airport is 32°F (1954).



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