Colder air is expected to move into Illinois later this week. How long will it last?

“I think it will last three or four days for the coolest temperatures,” said Freese-Notis Meteorologist Dan Hicks during a Tuesday conversation with RFD Radio. “We started the month out with some cool days, but we’ve warmed up the past several days.”

He calls it a wide swing from below normal to above normal temperatures.

“And we’re going to swing back below normal,” Hicks said. “The coolest air arriving Thursday into the weekend.”

Readings will likely be 10 degrees below-normal for a few days.

“I think high temperatures at the lowest point will be in the 30s and 40s over the central and northern Midwest and 40s and 50s farther south.”

He doesn’t think we’ll be “locked into a long period” of unusually warm or cool weather, but he anticipates “more changeable conditions” over the next week to 10 days.

There hasn’t been much precipitation this month in Illinois.

“The first real significant chance coming up is Wednesday night through Thursday as a system pushes through the Midwest,” Hicks said.

The system could drop .25 to .75 inches rain amounts and even bring a few thunderstorms.

“But that system does move fairly quickly out of the Midwest with some dry time returning,” he said.