Cold/Wind Chill — Northern Cook County, Illinois

2025-02-18 · Northern Cook County, Illinois

Wider weather episode

The combination of northwest winds around 10 mph and temperatures 5 below to 10 below zero, produced wind chills that were mainly 20 below to 25 below zero across most of northern Illinois during the early morning of February 18th. A few locations measured wind chills 25 below to 30 below zero.

Source: NOAA Storm Events Database, event_id 1237166. Narrative written by the NWS forecast office that issued the report.