Wisconsin starts the morning with a sharp chill settling into valleys and open farmland, where frost clings to grass and windshields. The cold is not just uncomfortable. It is actively damaging sensitive vegetation across western Wisconsin and nearby river communities.
According to the National Weather Service, temperatures are sitting between 29 and 33 degrees in La Crosse, Prairie du Chien, Platteville, and Alma through 8 a.m., with sub-freezing pockets east of the Mississippi River. Cold air drainage is intensifying frost in low-lying areas near the river bluffs and rural roads.
This is part of a broader system pulling much-below-average temperatures across the Midwest, keeping early May conditions unusually cold.
The primary impact is agricultural. Crops, backyard gardens, and flowering trees can suffer damage within minutes at these temperatures. Low-lying fields and frost-prone valleys face the highest risk, especially along the Mississippi River corridor.
Travel impacts remain subtle but important. Damp pavement combined with freezing air is creating slick spots on bridges and elevated stretches of US-14 and Highway 35. These areas cool fastest, raising the risk of brief flash freezing during the morning commute.
Conditions improve by late morning as temperatures climb into the upper 50s and low 60s. Sunshine returns, but the cold start lingers in shaded areas.
Another round of freezing temperatures develops late tonight into early Saturday, with lows near 29 degrees again. That second window may bring more widespread crop damage if precautions are not taken.
Five-day outlook:
Saturday: Early freeze, then sunny, high near 63°F
Sunday: Mostly sunny, high near 70°F
Monday: Showers and storms possible, high near 75°F
Tuesday: Cooler with scattered showers, high near 58°F
Wednesday: Mild and dry, high near 56°F
