textproduct: La Crosse
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
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.
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