The National Weather Service has posted a freeze watch for mid-Michigan for tonight into Friday morning.
Clear skies and light winds will allow temperatures to drop into the 25 to 30-degree range, most likely between 3 and 7 a.m. Friday. Low-lying areas will be particularly vulnerable.
It will be cold enough to mess with some of the emerging crops, but the extent of the damage will depend on how everything plays out.
The record low temperature in Mt. Pleasant for May 18 is 25 degrees, set in 1925.
So far this week, temperatures are running about 12 percent below normal. For the heating season, which runs from Labor Day to Memorial Day (this is Michigan, after all), temperatures are 9 percent above normal.