Cold/Wind Chill — Mchenry, Illinois

2025-12-14 · Mchenry, Illinois

Wider weather episode

Bitterly cold air moved across Illinois during mid December with wind chills 20 below to 25 below zero for many areas with a few locations as low as 30 below zero on the morning of December 14th. Wind chills were 20 below to 25 below zero across central Illinois on the morning of December 15th.

Source: NOAA Storm Events Database, event_id 1302806. Narrative written by the NWS forecast office that issued the report.