Wisconsin, Michigan and the Lower Midwest Face Final Frost Rounds Into Mid-May With Temperatures Dropping to 30 Degrees Near Green Bay by Monday May 11
WISCONSIN, MICHIGAN AND THE LOWER MIDWEST — The lower Midwest is approaching the final rounds of frost risk for the season, with temperature forecast data valid at 5:00 AM EDT Monday, May 11, 2026 showing readings dropping to 30 degrees near Green Bay and 32 degrees in the Green Bay area — well into frost and freeze territory for mid-May mornings. Forecasters are watching early next week for a couple of last frost chances across the region.
Monday May 11 Early Morning Temperatures
| City | Forecast Temperature at 5AM |
|---|---|
| Green Bay WI | 32 degrees F |
| Wausau WI | 30 degrees F |
| Milwaukee WI | 36 degrees F |
| Lansing MI | 34 degrees F |
| Chicago IL | 43 degrees F |
| Toledo OH | 43 degrees F |
| Indianapolis IN | 43 degrees F |
| Cincinnati OH | 43 degrees F |
| Louisville KY | 43 degrees F |
| Columbus OH | 45 degrees F |
| Evansville IN | 45 degrees F |
| Pittsburgh PA | 45 degrees F |
| St. Louis MO | 48 degrees F |
| Des Moines IA | 50 degrees F |
| Nashville TN | 48 degrees F |
Frost Threat Focused on Wisconsin and Northern Michigan
The coldest readings on Monday morning are concentrated across northern Wisconsin and the Upper Peninsula corridor, where temperatures at 30 to 32 degrees will produce frost and potentially a light freeze across exposed surfaces. Gardeners and growers across Wisconsin and northern Michigan should be prepared to protect sensitive plants before Monday morning arrives.
Areas farther south across Illinois, Indiana and Ohio will see temperatures in the 43 to 45 degree range — cold but generally above the frost threshold for most of the region.
These Are Expected to Be the Final Frost Rounds of the Season
The mid-May cooler mornings are anticipated to be the final rounds of frost risk for the lower Midwest this season. Once past these last frost events early next week, temperatures are expected to trend warmer and the frost risk window closes for the spring season across the region.
Stay with CabarrusWeekly.com for continuing frost and temperature updates across the Midwest through mid-May.
