29. The warm weekend will give way to cooler temps this week.
The chart (to the right) shows temperatures this last weekend and what is forecast for the coming week. The dashed lines show average high and low temperatures. We have been a bit above average the last couple days, but we'll make up for by being a little lower than average the next four. Despite this cooler air moving in, it will not be the arctic air we have seen the last two months, instead it will have more of a modified-Pacific quality to it.
Fronts and low pressures on the move.
Current surface analysis (mapto the left, from HPC) shows a weak low pressure over Eastern Lake Superior that is dragging a cold front across the northern half of Wisconsin. Meanwhile a broad area of low pressure is organizing over Oklahoma and Nebraska, 1000 mb currently (29.53 "Hg). This low pressure will continue moving east in to the Ohio Valley and give extreme southern Wisconsin a few inches of snow today and tonight.
What's in store for northern Wisconsin?
Some low level clouds and fog are hanging around this morning and will probably increase throughout the day... today will not be sunny like the last few. Winds behind the cold front will become marginally favorable for some light lake-effect snow across the snowbelt areas of Wisconsin and the UP of Michigan tonight. NWS Duluth's Weather Story (clipped screenshot to the right) shows where they expect will see snow. Between less-than-inch and several inches are possible, if the winds become more favorable an advisory may be issued by the NWS for heavier snow accumulations. This snow will taper off by Wednesday afternon as winds are forecast to turn to the west.
Looking ahead, Friday could see some snow as the computer models show a system moving across the region by the end of the week. It's way too early to be sure of anything, but something to keep an eye on.