US Weekend Temperatures Dip To 27F

Sunday night temperatures in the northern Midewest plunged as low as 27F in the intriguingly named Embarrass, Minnesota, says Allen Motew of QT Weather. Elsewhere in N Minnesota 31-34F was the norm.

Monday, temperatures will also drop for a third day in a row producing potentially damaging frost at near all-time August lows in Wisconsin, Minnesota, N Iowa and N Illinois, he says. Monday morning’s lows will be near freezing in Central Wisconsin, producing a combo of frost and fog.

An unseasonably cool air mass will remain across northern Illinois and northwest Indiana through tonight. A ridge of high pressure will build into the region tonight allowing for winds to diminish and mostly clear skies. The combination of the unseasonably cool air mass, light winds, and clear skies will allow for chilly conditions tonight that will approach or break the record lows for the date, adds Allen.

For Chicago, the record low temperature for Aug 31st is 47 set back in 1872. The current forecast low for Monday morning is 45.

Record low temperatures for the month of August will be reached Monday morning across parts of the Corn Belt as readings dip to greater than -16 to -20 degrees below normal. The coldest conditions will center over Iowa, Wisconsin and NW Illinois.

For the week ahead, temperatures will average -3 to -9 degrees below normal across the Corn Belt while the northern Plains and Canadian Prairie is much warmer than normal ahead of the next cold outbreak, he says.

The next potential frosts will be across the Canadian Prairie and Dakotas, Tuesday and Wednesday, Sept 8-9 and Saturday/Sunday, Sept 12-13, he concludes.