September 21, 2012
While it won’t happen tonight, freezing temperature are inevitable. Fall may just be starting, so patchy frost is not far behind, and eventually a widespread freeze to plants will occur. Temperatures will often cool faster in low-lying areas and river valleys, where the denser cold air can settle into these lower terrains. You will also see the first frost and freeze come to rural areas or outskirts of urban areas before the densely populated urban areas. When can you expect that mercury to drop to 32 degrees?
Average Date of First Fall Freeze
Follow along when areas see their first freeze with this map courtesy of the Midwestern Regional Climate Center. The map will update each morning to show the progression of freezing temperatures.
Date of First Fall Freeze of 2012
Check back to the Weather or Not Blog to see when freezing invades from Canada!