Here are some list of the siren test schedules in Wisconsin
Rock County, Wisconsin test their sirens at 12:05 PM, first Wednesday, from April to October
Dane County, Wisconsin test their sirens at 12:00 PM, first Wednesday, All Year Round
Green County, Wisconsin test their sirens between 11:45 AM & 12:15 PM, every 1st Wednesday
Walworth County, Wisconsin test their sirens at 12:00 PM, 3rd Wednesday
Jefferson County, Wisconsin test their sirens at 11:00 AM, 1st Wednesday
Lafayette County, Wisconsin test their sirens at 12:00 PM, 1st Wednesday
Kenosha County, Wisconsin test their sirens at 10:30 AM, 3rd Saturday (Alert on Odd Number Months, Attack on even number months)
Racine County, Wisconsin test their sirens at 4:00 PM, 1st Saturday
Milwaukee County, Wisconsin test their sirens at 12:00 PM, 2nd Wednesday
Waukesha County, Wisconsin: Every Wednesday at 2:00 PM (April - September)
2nd Wednesday at 2:00 PM (September - April)
Hope this helps
