Weather
Chicago, IL Weather Oct. 25-28: Cold Front, Then Near 78°F
Chicago, IL – A cold front moving through northern Illinois Monday could bring slightly cooler temperatures to the Chicago area, but the change will be brief as generally mild, dry weather continues t
By Cameron Hayes · 2026-10-24T20:24:24.440Z
Chicago, IL – A cold front moving through northern Illinois Monday could bring slightly cooler temperatures to the Chicago area, but the change will be brief as generally mild, dry weather continues through the middle of the week.
According to the National Weather Service in Chicago, its Saturday, Oct. 24, forecast calls for daytime highs ranging from the 60s to upper 70s across northern Illinois through Wednesday, Oct. 28, with no significant rainfall highlighted in the four day outlook.
Sunday, Oct. 25, will bring highs between 72 and 78 degrees, although locations near the Illinois shoreline of Lake Michigan could experience slightly cooler afternoon conditions.
Overnight temperatures will remain chilly, with lows Saturday night ranging from 44 to 54 degrees. Chicago and areas near the lakeshore are expected to remain warmer than inland communities.
Cold Front Arrives Monday
A cold front is expected to move through the region Monday, Oct. 26, bringing slightly cooler conditions to some locations.
North of Interstate 80, afternoon highs are forecast between 60 and 71 degrees, while areas south of I 80 could reach 67 to 75 degrees.
Monday night temperatures will fall into the middle 40s to lower 50s.
Temperatures Rebound by Wednesday
Tuesday, Oct. 27, will remain mild, with highs ranging from 64 to 76 degrees. The warmest conditions are expected south of Interstate 80.
By Wednesday, Oct. 28, temperatures could climb back into the 70s, with regional highs between 70 and 78 degrees.
Overnight lows will also moderate, reaching the lower to upper 50s by Wednesday night.
The forecast provides favorable conditions for outdoor activities, fall festivals and Halloween preparations across Chicago, Cook County and surrounding northern Illinois communities.
However, Halloween falls Saturday, Oct. 31, beyond the period covered by this particular outlook.
Residents planning Halloween activities should monitor updated forecasts at weather.gov/chicago as the holiday approaches.