textproduct: Milwaukee/Sullivan

KEY MESSAGES

- Increasingly warm and still low relative humidity days through Thursday.

- Increasing humidity and thunderstorm chances for late in the week into the weekend.

SHORT TERM

Issued 1135 PM CDT Mon Jun 1 2026

Tonight through Wednesday:

Surface high pressure will build in from the north tonight and then remain over the region through Wednesday. Skies will be mostly clear tonight through Wednesday, with light east to northeast winds persisting through Tuesday. Winds will become southerly on Wednesday as the high begins to shift eastward. High temps Tuesday will be very similar to what was observed today, with somewhat warmer conditions likely Wednesday as the southerly winds develop.

DDV

LONG TERM

Issued 1135 PM CDT Mon Jun 1 2026

Thursday through Monday:

Southerly winds will persist Thursday, bringing continued above normal temperatures. High pressure to the southeast should hold help to keep any showers/storms west and north of the forecast area through at least the daytime hours, with an increasing chance for some precip overnight as the high gradually shifts southeast ahead of an approaching trough.

Moisture is expected to increase substantially later by Friday, with precipitable water values in the 1.5 to 1.75 inch range per the latest ECMWF and GFS runs. This will open the door for higher shower/storms chances Friday and Saturday with any shortwaves that roll through during this period. Models are are showing a weak signal for a wave Friday and then again Friday night into Saturday, so have higher precip chances in the 50-70 percent range for this period.

Latest model runs generally show surface high pressure building in from the northeast for Sunday into Monday, which may push the deeper moisture southwest of the area and bring a break to the precip chances. Temps might cool a bit for this period as the high arrives, but overall temps will likely still be near to a few degrees above normal.

DDV

AVIATION

Issued 1135 PM CDT Mon Jun 1 2026

Mostly clear skies are expected tonight through Tuesday as high pressure builds in from the north. Light easterly winds will continue through tomorrow most places, with the winds more likely from the northeast near Lake Michigan.

DDV

MARINE

Issued 1135 PM CDT Mon Jun 1 2026

High pressure around 30.4 inches over Hudson Bay will move to Ontario and Lake Superior by early Tuesday morning, then south over Lake Michigan for Tuesday afternoon and night. Expect light to modest north to northeasterly winds to turn more easterly late tonight, but back to northerly on Tuesday. Light and variable winds are then forecast later Tuesday and Tuesday night.

Light to modest southerly winds will then return to Lake Michigan for Wednesday and Wednesday night as the high slowly moves east of the region. Winds are expected to gradually increase and shift more southwesterly for Thursday afternoon and night. Shower and storm chances will return late week into the weekend.

DDV

MKX WATCHES/WARNINGS/ADVISORIES

WI...None. LM...None.