National Weather Service United States Department of Commerce
Dry conditions have been recorded across the southern half of Wisconsin over the past month and a half. The driest portion has been southwest Wisconsin where only 10-25% of the normal precipitation has fallen over this time frame. Much of southern WI has precipitation deficits of 3-6 inches during this time. Due to these dry conditions, portions of southwest and southeast Wisconsin have been placed into "Abnormally Dry (D0)" and "Moderate Drought (D1)" conditions via the US Drought Monitor. 

 

Departure from Normal-Inches Percent of Normal Climate Prediction Center 6-10 Day Outlook
US Drought Monitor - September 12, 2017