026
FXUS63 KARX 291055
AFDARX

Area Forecast Discussion
National Weather Service La Crosse WI
555 AM CDT Fri May 29 2026

.KEY MESSAGES...

- Small rain chances with seasonably warm temperatures this
  weekend.

- Above-normal temperatures with dry weather to start June.

- Higher rain chances return to the area Wednesday into
  Thursday.

&&

.DISCUSSION...
Issued at 1225 AM CDT Fri May 29 2026

Today and Tonight

High pressure will keep the area dry into tonight. With 850 mb
temperatures, close to Thursday, high temperatures will once
again range from the mid-70s to mid-80s. Low temperatures will
range from the mid-50s to lower 60s.

This Weekend

The omega high will gradually pinch off the high. As this
occurs, the western trough should move far enough east that
scattered showers and storms may be seen mainly west of the
Mississippi River Valley. With cooler 850 mb temperatures, high
temperatures will range from the mid-70s to around 80. Low
temperatures will range from the mid-50s to lower 60s on Friday
night and from the mid-40s to upper 50s on Saturday night.

Sunday night into Tuesday night

The omega high will re-establish itself over the Upper
Mississippi River Valley on Sunday night and Monday, and then
linger into Tuesday night. As this occurs, high pressure will
build across the area. As a result, the area will be dry with
high temperatures in the mid- and upper 80s and low temperatures
in the 50s. With more sunshine, this will likely result in
deeper mixing. If this occurs, the surface dew points and
relative humidities will be likely too high during the
afternoons. This could result in elevated fire weather concerns.

Wednesday into Thursday

The northern stream will see an amplified jet move into the
Pacific Northwest on Monday night and Northern Plains on
Tuesday. This quickly flattens the omega high over the Upper
Mississippi River Valley and Great Lakes on Wednesday and
Wednesday night. This will bring a return to better chances for
showers and storms. However, with most-unstable CAPES generally
less than 500 J/kg and the 0-3 km and 0-6 km shear are generally
less than 20 knots, organized severe weather seems unlikely.
High temperatures will be in the lower and mid-80s and low
temperatures will range from the mid-50s to lower 60s.

&&

.AVIATION /12Z TAFS THROUGH 12Z SATURDAY/...
Issued at 555 AM CDT Fri May 29 2026

VFR conditions prevail through the TAF period with SCT-BKN high
clouds and light east to southeast winds of 10KT or less.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
IA...None.

&&

$$

DISCUSSION...Boyne
AVIATION...Falkinham