3 Things To Know:
- Fog may develop in low-lying areas late tonight into early Friday morning.
- Expect periods of showers and storms from Saturday into early next week.
- Warm and humid conditions will return starting Sunday, with potential small craft advisories on Lake Michigan.
Fog Late Tonight
High pressure is settling into Southeast Wisconsin tonight, bringing calm and clear conditions. However, this calm weather also means that areas of fog may develop, particularly in the Wisconsin River Valley and other low-lying areas. This fog could become dense in some spots, so take caution if you’re traveling overnight.
Overview of the Weekend
As we transition into the weekend, a low-pressure system will approach from the Great Plains. While Saturday will be mainly dry through the morning hours, the chances for rain will increase as the day progresses. Rainfall with this system is expected mainly overnight, with a 50-65% chance of showers and a few rumbles of thunder possible. However, significant severe weather is not anticipated.
Warmer and More Humid Conditions on Sunday
On Sunday, expect a change as warmth and humidity surge into the region, with temperatures reaching the mid-80s and humidity levels rising. This could lead to scattered showers and thunderstorms throughout the day and into early next week. The setup is ripe for locally heavy rainfall and thunderstorms, though timing and exact locations remain uncertain.
Small Craft Advisory-criteria conditions will return to the nearshore waters Saturday afternoon through Sunday, especially north of Milwaukee. For those looking to enjoy the beach, stay alert for potential beach hazards as well.
Summary
In summary, Southeast Wisconsin is set for quiet weather tonight with potential fog. The weekend will bring increasing chances for showers and storms, accompanied by a spike in warmth and humidity starting Sunday. As we watch the progression of this weather pattern, stay tuned for any updates.
“Rumbles of thunder are certainly possible with this activity, but we have no concern for severe weather at this time.” – NWS Milwaukee
For updated forecasts where you live check out our Forecasts Page.
Source: NWS MKX Area Forecast Discussion, issued 2026-08-27T18:57:00+00:00.
