The coldest air of the season is set to arrive Thursday morning.  A lighter wind and a clear sky will allow most temperatures to fall well into the 30s.  The exception will be along the lakefront from Milwaukee to Kenosha.  Those areas will likely hover closer to 40.

Areas well west of the lake could be in the lower 30s.  Widespread frost will be expected there.  If you have any sensitive plants go ahead and bring them in.

Milwaukee has not dropped into the 30s since May.  Usually the first 30s for Milwaukee occur during the first week of October.  Last year it wasn't until October 23rd!