The National Weather Service has issued a wind advisory as sustained winds of 20 to 30 mph and gusts up to 45 mph are expected in southeastern Wisconsin overnight Monday.
The wind advisory will be in effect until 6 p.m. Tuesday and will usher in much colder temperatures.
An intensifying low-pressure system moving across Minnesota will reach north of Lake Superior Tuesday morning and bring strong winds as well as colder temperatures, said Steve Hentz, a National Weather Service meteorologist based in Sullivan.
"The cold front will mix down the stronger winds from just above the surface," Hentz said.
Which will be quite a contrast from today's balmy weather. Milwaukee broke the highest temperature record for Monday of 60 degrees set in 1961 and equaled in 2001 when the mercury rose to 64 by 5 p.m. Madison broke its high temperature record of 60 set in 2001; by 7 p.m. the high in Madison was 68 degrees.
Winds are expected to increase to 35 mph overnight with continued gusts of 45 mph.
Temperatures were expected to drop into the mid-40s by midnight Monday and the low 30s by sunrise Tuesday.
The cold will stick around all week, Hentz said. Overnight temperatures Tuesday evening into Wednesday will be in the teens inland and low 20s close to Lake Michigan.
"High temperatures will be in the mid- to upper 20s for the rest of the week; it won't warm up toward freezing, 32 degrees, until Sunday," Hentz said.
The normal high and low temperatures for this time of year in Milwaukee are 37 and 24 degrees.