Climatology of Spring Freezes

While unseasonably mild weather spurred early growth around the region, it is important to remember that freezing temperatures typically occur well into April over central and southeast Illinois. Much of the area will usually see the last freeze around mid April, with hard freezes (lows of 28°F or colder) still possible through the first several days of the month.

The following graphics are courtesy of the Midwestern Regional Climate Center. An interactive map is also available at https://mrcc.purdue.edu/freeze/freezedatetool .

Observed Date of Most Recent Freeze

Observed Date of Most Recent Hard Freeze (28 deg.)

Average Date of Last Freeze

Average Date of Last Hard Freeze (28 deg.)

Observed date of most recent freeze this season. Image courtesy MRCC

Observed date of most recent hard freeze (28 degrees or colder). Image courtesy MRCC

Average date of last freeze. Image courtesy MRCC

Average date of last hard freeze (28 deg.) Image courtesy MRCC