Monday, August 31: Heat Index in the 90s and Thunderstorms Could Affect Sheboygan County Plans
Sheboygan County, WI — August 31, 2026. Outdoor plans, work schedules and evening activities across Sheboygan County may need flexibility Monday as thunderstorms remain possible and heat index values are expected to reach the low to mid 90s.
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7-Day Weather Forecast
Monday, August 31 weather outlook
The National Weather Service Milwaukee/Sullivan office issued its Hazardous Weather Outlook at 5:49 a.m. CDT Monday, August 31, 2026. Sheboygan County is included in the outlook area.
The outlook calls for chances of thunderstorms Monday into Monday night, along with heat index values in the low to mid 90s. Storm timing and rainfall amounts may vary across the county, so residents should check updated forecasts and alerts before heading out.
This is an outlook, not a severe thunderstorm warning or heat advisory. Residents should not assume that every Sheboygan County community will receive the same rainfall or storm conditions.
Additional storm chances into midweek
The NWS Milwaukee/Sullivan Weather Story describes warm, humid and active conditions through at least midweek. Scattered thunderstorms may continue Tuesday through Wednesday, with heat index values potentially reaching the middle to upper 90s Tuesday and Wednesday.
Planning steps for families and outdoor workers
People working, exercising or attending outdoor activities should drink water regularly, take breaks and plan strenuous tasks around the hottest part of the day. Keep a lightning-safe indoor location available and move inside when thunder is heard. Event organizers, commuters and families should review updated NWS forecasts and alerts before leaving for Monday activities.
