It was a chilly start to the day Tuesday for areas away from Lake Michigan—temperatures dipped close to frost levels in some locations   

Area low temperature map and coolest area low temperatures 

Tuesday’s Almanac

Temperatures warmed noticeably Tuesday afternoon under bright sunshine

Highs, and how much warmer than Monday? 

Tracking the change in Chicago’s temperatures in coming days—from summer-level warmth to the season’s coolest air by Sunday/Monday 

Forecast highs and temperature departure from normal late afternoon 

WED. Oct. 9 temps and departures from normal:

THUR. Oct. 10 temps and departures from normal:

FRI. Oct. 11 temps and departures from normal:

SAT. Oct. 12 temperatures and departures

SUN. Oct. 13 temps and departures from normal:

MON. Oct. 14 temps and departures from normal: