# First frost of season possible Saturday morning

> Chicago could see first frost Saturday morning as temperatures dip below freezing.
- Title: First frost of season possible Saturday morning | Shortify
- Summary: Chicago could see first frost Saturday morning as temperatures dip below freezing. Chicago may experience its first frost Saturday morning with temperatures…
- Keywords: chicago, weather, frost, national weather service, cook county, lake county, kendall county, mchenry county, kane county, first freeze, el niño, chicago weather
- Source: Chicago Sun-Times — https://chicago.suntimes.com/news/2026/10/16/frost-freeze-weather
- Published: 2026-10-16T14:29:07.439+00:00
- Read time: 1 min
- Topics: chicago, weather, frost, national weather service, cook county, lake county, kendall county, mchenry county, kane county, first freeze, el niño, chicago weather
## First frost possible Saturday morning
Temperatures are expected to fall into the 30s overnight Friday and dip to around freezing early Saturday morning.
## Frost advisory for Lake County
A frost advisory was issued for Lake County, north of Chicago.
## Freeze advisories for western counties
Freeze advisories were issued for McHenry and Kane counties.
## Chicago unlikely to see frost
Chicago is unlikely to see frost, but temperatures could drop lower in areas farther from the city.
## National Weather Service forecast
National Weather Service meteorologist Kevin Doom said temperatures will be brisk tonight and rise through the weekend.
## First freeze earlier than average
This year’s first freeze is arriving slightly earlier than usual with an average date of Oct. 23 in Cook County.
## El Niño potential for mild winter
A potentially 'historically strong' El Niño could bring mild winter temperatures to Chicago.
## El Niño weather impact
El Niño could lead to 50% to 60% chance of above-normal temperatures this winter in Chicago.
## Potential for cold snaps
Even in a mild winter, the weather service expects 'notable' stretches of cold weather and snowstorms.
## Key takeaway

Chicago may experience its first frost Saturday morning with temperatures dropping to freezing before warming by afternoon.