Fall Freeze Climatology

On average, central Illinois will see its first freeze around the middle of October. The first hard freeze (low of 28 degrees or below) typically occurs in late October or the first few days of November.

The following graphics are courtesy of the Midwestern Regional Climate Center.

Observed date of most recent freeze

Observed date of most recent hard freeze (28 deg.)

Average date of first freeze

Average date of first hard freeze (28 deg.)

Observed date of most recent freeze. Image courtesy MRCC

Observed date of most recent hard freeze (28 deg.) Image courtesy MRCC

Average date of first freeze. Image courtesy MRCC

Average date of first hard freeze. Image courtesy MRCC