Active AlertsNaperville, IL

What: Sub-freezing temperatures as low as 26 expected, with the coldest conditions across interior northern Illinois.
Where: Portions of central, east central, north central, and northeast Illinois and northwest Indiana.
When: Until 9 AM CDT /10 AM EDT/ this morning.
Impacts: Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.