For those people looking for 80 degrees, humidity, and all of that stuff that comes with summer, well, you'll have to wait about 8 months before we see it again. The cold air mass is headed from towards the MN/WI area from Canada, bringing with it the start of some much colder temperatures, and the end of the growing season. Freeze Warnings are currently in effect for Western MN, and parts of Central MN. Areas up in NE MN are not in the warning, likely because they have already seen a hard freeze, officially ending their growing season. This whole air mass will be over the eastern part of MN and Western WI beginning Friday night and lasting right up into next week. As long as skies clear enough, and winds die down enough, Freeze Warnings will likely be needed for the rest of us in Eastern MN and Western WI. Below is a map with the current warnings, as well as showing the approx. freezing line as of 3:35am Friday.
The first snowfall of the season still appears to be on track for overnight Friday, but more likely Saturday morning. According to the 00z run of the WRF, the band of snow should be approaching the MN/WI border around the 7am time frame, but that will likely be adjusted with each run. Up to an inch of snow could fall on grassy areas, mostly because the roads are simply too warm for anything to accumulate on them. The snow should melt through the day as temps get above freezing, but stay quite cold through at least the middle of next week. To start off the work week, however, we could see a rain/snow mix, with the HPC putting parts of SW and West Central MN in a slight (10%) risk for at least 4 inches of snow (designated by the blue shaded area)! Below is the map for 7am Sunday to 7am Monday. Stay tuned on that one!
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