Temperatures this past weekend were more typical of fall with the high reaching 74° on Saturday and 73° on Sunday. Cool, Canadian air rushed southward causing temperatures to dip below freezing in parts of North Dakota early Sunday morning which prompted Frost Advisories. The low this morning reached 48° at the Chicago Rockford Int'l Airport as the chill remains in the air for one more day.
Temperature extremes are very common for this time of year as the seasons begin to change. Our temperature swings come Tuesday and Wednesday as the mercury is expected to climb into the middle and upper 80s both days. The ridge of high pressure in the west will shift east over the Great Plains as high pressure moves into the Mid-Atlantic. Winds will turn southerly this afternoon and pick up Tuesday allowing temperatures to quickly rise into the middle 80s during the day. Since humidity will be lacking and the soil is still relatively dry from the ongoing drought in northern Illinois and southern Wisconsin it's possible temperatures may reach near 90° Wednesday afternoon. Don't get too excited, however, as another strong front comes through Thursday bringing temperatures back below average by the weekend.
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