A cold night is coming up for the Upper Peninsula. A frost advisory is in effect for tonight for Dickinson, Southern Houghton and Iron counties and interior portions of Ontonagon, Baraga, and Gogebic counties. Temperatures will drop as cold as 33 degrees in the western half of the Upper Peninsula. This means the Upper Peninsula could have a killing frost this late into the summer.
Friday morning won’t have as widespread of cold air as Thursday, but still cold enough for scattered light frost.
Lower Michigan will be chilly tonight, but fortunately not frosty. Almost all of Lower Michigan will cool off into the 40s by Thursday morning. This isn’t cold enough for frost, but it’s cold enough to make you shiver under the covers if you aren’t prepared.
The frost chances tonight across the Upper Peninsula will depend on how thick the smoke layer is aloft. The smoke can be so thick that it acts as a blanket and holds some heat in the atmosphere, not allowing temperatures to plunge to just above freezing. In the case of thick smoke low temperatures will only drop into the upper-30s. That is still plenty cold for the first week of June.
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