Central Wisconsin Weather Alert: First Fall Frost Expected Overnight Saturday Morning
WAUSAU, WISCONSIN — The first widespread frost of the season is expected to blanket central Wisconsin early Saturday morning as cold air settles into the region. The National Weather Service in Green Bay has issued a Frost Advisory in effect from 2 a.m. to 8 a.m. Saturday, covering Marathon, Wood, Portage, and Waushara Counties.
Temperatures to Dip Into the 30s
Forecasters say overnight lows will fall into the mid-30s, allowing frost to form on exposed surfaces across much of the region. The advisory includes cities such as Wausau, Marshfield, Stevens Point, Plover, Wisconsin Rapids, and Wautoma. Clear skies and calm winds will create ideal conditions for frost development, especially in rural and low-lying areas.
The cold snap could damage or kill tender vegetation if not protected. Homeowners are urged to cover outdoor plants, garden beds, or move potted flowers indoors before midnight to prevent frost damage.
Travel and Visibility Concerns
In addition to the frost threat, patchy fog may form overnight in valleys and near waterways, reducing visibility for early morning drivers along Highway 10 and Interstate 39.
Drivers are advised to allow extra time for travel and to watch for slick spots on bridges and rural roads where frost may accumulate before sunrise. Commuters should avoid sudden braking and use low-beam headlights in fog-prone areas.
Looking Ahead: Cold Nights, Mild Days
While Saturday morning will start cold, warmer afternoons are expected to return by Sunday with highs climbing back into the upper 50s and low 60s. However, another chilly night could arrive early next week as fall weather continues to tighten its grip on central Wisconsin.
Meteorologists say this weekend’s frost marks a seasonal turning point as the region transitions toward cooler, longer nights heading into late October.
Stay with NapervilleLocal.com for continued weather updates, frost alerts, and seasonal forecasts across Wisconsin and the Midwest.
I’ve lived in Naperville long enough to see how quickly our community changes — from new developments downtown to sudden shifts in our Midwest weather. Reporting on Naperville news and daily forecasts gives me the chance to keep neighbors informed about what really matters. My goal is simple: deliver clear, timely updates so you always know what’s happening in our city and what to expect from the skies above.