Waukesha, Wisconsin 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

588
FXUS63 KMKX 132013
AFDMKX

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
313 PM CDT Fri Jun 13 2025

.KEY MESSAGES...

- There is a moderate swim risk for the Lake Michigan beaches
  from Racine County northward into tonight.

- Scattered showers and a few thunderstorms into early this
  evening across far southern and southwestern parts of the
  area.

- Chances for showers and thunderstorms at times Sunday
  afternoon into next week, with the better chances Tuesday into
  Wednesday.

&&

.SHORT TERM...
Issued 313 PM CDT Fri Jun 13 2025

Tonight through Saturday night:

Some showers have developed in far southern portions of the area
near the Illinois border, near an area of low level confluence
where some cumulus clouds are becoming more congested. This
activity may continue to develop near the Illinois border into
early this evening, with peak heating, before dissipating. A few
thunderstorms may occur as well, if enough instability develops.

There is a moderate swim risk into tonight for the Lake
Michigan beaches from Racine County northward. Breaking waves
and currents are expected. Stay away from dangerous areas like
piers, breakwalls and river outlets. Always have a floatation
device with you in the water.

East to northeast winds with the high pressure system to the
northeast of the area should otherwise keep things dry tonight
into Saturday night. There may be some lower clouds that linger
tonight into Saturday morning, before scattering out by the
afternoon. Highs should rise into the upper 70s to around 80
degrees well inland Saturday, with onshore winds keeping
lakeshore areas in the 60s.

Wood

&&

.LONG TERM...
Issued 313 PM CDT Fri Jun 13 2025

Sunday through Friday:

Sunday into Monday night will be very conditional for shower and
thunderstorm activity, and will depend on what develops over
southern Minnesota and northern Iowa with a warm/stationary
frontal boundary. The stable air over the area may limit any
potential for convection to move into the area during this
period, or any storms may shift southeast and miss the area to
the southwest. Kept chance PoPs (30 to 40 percent) going for
most of this period, but may need to reduce them in later
periods if the drier trend continues. Temperatures should
gradually warm up inland from the lake Sunday into Monday,
perhaps into the middle 80s by Monday.

There is a better chance for showers and storms to move through
the region at times Tuesday into Wednesday night, as a warm
front and surface low shifts into and through the region from
the Central Plains. There is a 15 percent risk for severe
weather in the SPC Day 6 outlook for Wednesday into Wednesday
night, as the low passes through the region. There should be
higher dew points into the 60s by then, with warm temperatures
into the 80s, which should bring more instability. Forecast
soundings are showing increasing deep layer bulk shear values as
well. Things may change with the timing and impacts this far
out for Tuesday into Wednesday, so this period will bear
monitoring.

Wood

&&

.AVIATION...
Issued 313 PM CDT Fri Jun 13 2025

Some showers have developed in far southern portions of the area
near the Kenosha and Janesville terminals. This activity may
continue to develop near the Illinois border into early this
evening, with peak heating, before dissipating. A few
thunderstorms may occur as well, if enough instability develops.

Moderate to sometimes gusty northeast winds into early this
evening should weaken. The high pressure system to the
northeast of the area should otherwise keep things dry tonight
into Saturday night. The east to northeast winds should be
weaker into Saturday night across the area.

There may be some lower clouds with ceilings around 2000 feet
AGL or so that develop tonight into Saturday morning, before
scattering out by the afternoon.

Wood

&&

.MARINE...
Issued 313 PM CDT Fri Jun 13 2025

High pressure around 30.3 inches over eastern Ontario will keep
winds primarily northeasterly through the weekend. Weak low
pressure around 29.9 inches will develop in Missouri tonight,
moving into the Ohio River Valley and weakening into Sunday.

Northeast winds of 10 to 20 knots may bring waves of 3 to 4 feet
across the nearshore waters into tonight. This will approach
Small Craft Advisory levels.

Chances for showers and thunderstorms are forecast at times
Monday into next week, as the Ontario high pressure system
weakens and low pressure approaches the region from the Central
Plains.

Wood

&&

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

$$

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