NWS-Milwaukee/Sullivan Forecast Discussion

						FXUS63 KMKX 101636
AFDMKX

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
1136 AM CDT Fri Jul 10 2026

.KEY MESSAGES...

- Hot temperatures will return early next week, with highs of at
  least 90 possible Monday through Wednesday

- Dry weather is expected through Wednesday, with thunderstorm
  chances returning late in the week

&&

.SHORT TERM...
Issued 1136 AM CDT Fri Jul 10 2026

Tonight through Saturday night:

Surface high pressure overhead today will gradually strengthen
tonight through Saturday night, while a strong upper level
ridge builds in from the west. Scattered cumulus and broken high
clouds today will gradually decrease overnight, with mostly
clear skies then expected Saturday into Saturday night. Patchy
river valley fog will be possible later tonight into early
Saturday as the clouds decrease and winds remain light.
Temperatures will remain within a couple degrees of normal
through tomorrow, though highs will be just a bit cooler near
the lake under onshore winds.

DDV

&&

.LONG TERM...
Issued 1136 AM CDT Fri Jul 10 2026

Sunday through Friday:

Surface high pressure and the upper ridge are expected to remain
in place Sunday through Tuesday, with the ridge gradually
flattening mid to late week while the surface high weakens.
Temperatures will warm up early week under the strong upper
ridge, with highs likely cracking 90 by Monday. The warmest days
next week are likely to be Mon-Wed based on latest NBM probs for
highs greater than 90. Not out of the question to see temps push
95 one or two days given 925 mb temps of 26-28C. Dewpoints
should be a bit lower than the last hot stretch though, maxing
out in the 65-70 degree range. This should help to keep heat
indices largely under 100 degrees. That said, plenty of
sunshine, light winds, and heat indices in the 90s will make
for a hot first half of the week.

As the ridge flattens later next week, temps should fall back
toward normal values. Additionally, the door will open back up
for shower/storm chances Thursday and Friday as a shortwave or
two comes over top of the flattening ridge.

DDV

&&

.AVIATION...
Issued 1136 AM CDT Fri Jul 10 2026

Quiet weather is expected through Saturday under high pressure.
Expect light easterly winds today and tomorrow away from Lake
Michigan, with northeast winds near the lake. Winds will be
light and variable tonight. Some river valley fog will be
possible tonight, but otherwise VFR conditions should persist
through tomorrow. Scattered afternoon cumulus around 4-5 kft is
likely today, along with SCT to BKN high clouds. Mostly clear
skies are likely Saturday.

DDV

&&

.MARINE...
Issued 1136 AM CDT Fri Jul 10 2026

High pressure of 30.0 inches over the Great Lakes today will
strengthen to 30.2 inches this weekend while remaining in place.
The high will largely stay put through the first half of next
week, eventually shifting southward by late in the week ahead of
an approaching trough of low pressure. Northerly winds
generally under 15 knots through at least Saturday will become
southerly by Monday, increasing a bit early next week.

DDV

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...None.
&&

$$

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