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It's time to dig out shovels because snow is in the forecast, and it could drop as much as 3 to 4 inches in southern Wisconsin.

Geez, the leaves haven't even fallen off all the trees yet.

A low-pressure system is pushing lots of moisture from the south into Wisconsin on Monday and, combined with chilly temperatures, rain could switch to snow late Monday and early Tuesday, according to the National Weather Service.

While the metro Milwaukee area and other spots along Lake Michigan might see only a dusting, Waukesha County could get 1 to 2 inches of snow while Madison could see 3 to 4 inches.

And it's likely to be sloppy.

"This will be a wet one for sure," said Aidan Kuroski, a National Weather Service meteorologist based in Sullivan. 

Which could lead to power outages from branches still filled with leaves, sagging under the weight of wet snow and falling onto power lines, Kuroski cautioned.

"We'll start to get that changeover to snow mid to late evening" west of Madison, Kuroski said Sunday afternoon. "Then after midnight we'll definitely have snow across much of southern Wisconsin or at least a mix."

The average first day for a measurable snowfall — one-tenth of an inch or more — is Nov. 9 in Madison and Nov. 13 in Milwaukee.

The first day for snowfall of 1 inch or more, on average, is Nov. 24 in Madison and Dec. 2 in Milwaukee.

Monday is expected to be mostly cloudy with a high of 45 in Milwaukee before rain is forecast to start falling in the evening. It looks like rain will transition into snow overnight — around midnight west of Madison, 2 a.m. in the Madison area and by 4 a.m. in southeastern Wisconsin, the weather service reported.

Snow will probably leave Wisconsin by 7 a.m. Tuesday.

On the bright side, it appears most snowfall will accumulate late at night when traffic is relatively light. However, motorists should leave extra time for the Tuesday morning commute.

Because the ground is relatively warm, snow accumulations will probably melt later on Tuesday when temperatures are forecast in the low 40s in Milwaukee. 

There's also a chance for light rain or a rain/snow mix along the Wisconsin-Illinois border Wednesday and a stronger system could move into southern Wisconsin Thursday evening and Friday morning.

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