Milwaukee Weather: PM thunderstorms, severe potential

Published August 18, 2026 4:41 AM CDT

Forecast from FOX6 Chief Meteorologist Rob Haswell

Tuesday is the weather speed bump in an otherwise pretty nice stretch of August weather, with scattered showers and strong to severe thunderstorms possible. Areal coverage remains uncertain, but the best opportunity for widespread storms looks to be from mid-afternoon into early evening. A few storms could produce gusty winds, small hail and heavy downpours. The front clears Wednesday morning, setting us up for a very pleasant Wednesday and Thursday with sun, lower humidity and comfy temperatures. Another system arrives Friday with showers and storms, possibly lingering into Saturday. The good news for weekend plans is that high pressure should take over afterward, leaving much of Saturday night and Sunday quiet and comfortable.

Today:    Early morning sun then more clouds with a chance of showers and thunderstorms in the afternoon and evening.
High:     82°
Wind:     SW 5-15

Tonight:  Clearing.
Low:      62°
Wind:     NW 3-5

Wednesday: Mostly sunny.
High:     80° / 76 Lake.
Wind:     NE-E 5-10

Thursday: Mostly sunny.
AM Low:   60°                   High:  84°
Wind:     S 5-10

Friday:   Chance of showers and slight chance of thunderstorms late day and overnight.
AM Low:   63°                   High:  84°
Wind:     SW 5-10

Saturday: Slight chance of showers and thunderstorms.
AM Low:   64°                   High:  80°
Wind:     NNE 5-10

Sunday:   Mostly sunny.
AM Low:   62°                   High:  78°
Wind:     SE 5-10
 

6-day planner

FOX6 Weather Extras

Local perspective:

Meanwhile, FOX6Now.com offers a variety of extremely useful weather tools to help you navigate the stormy season. They include the following:  

FOX6 Storm Center app

FOX LOCAL Mobile app

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Big picture view:

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Maps and radar

We have a host of maps and radars on the FOX6 Weather page that are updating regularly — to provide you the most accurate assessment of the weather. From a county-by-county view to the Midwest regional radar and a national view — it’s all there.

School and business closings

When the weather gets a little dicey, schools and businesses may shut down. Monitor the latest list of closings, cancellations, and delays reported in southeast Wisconsin.

FOX6 Weather Experts in social media

The Source: Information in this report is from the FOX6 Weather Experts and National Weather Service.

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