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
- An upper level ridge will will provide dry weather through Monday.
- High temperatures will range from the upper 70s to the mid-80s today and Monday. Low temperatures will range from the lower 50s to lower 60s tonight.
DISCUSSION
Issued at 152 AM CDT Sun Aug 2 2026
Monday Night through Tuesday Night
From Monday night into Tuesday, a shortwave trough will move along the US/Canadian border, working to flatten the upper level ridge over the Upper Mississippi River. As this occurs, a cold front will move slowly southeast through the region on Tuesday. For areas along and north of the Interstate 90 corridor, the timing of this front will only be favorable for isolated to scattered showers and storms. During the afternoon and evening, 0-1 km CAPE will be up to 1500 J/kg along and ahead of the cold front in northeast Iowa, and southwest and central Wisconsin. With the better 0-3 km and 0-6 km shear located well in the wake of the front, organized severe weather look unlikely at this time.
Low temperatures will range from the lower 50s to mid-60s on Monday and Tuesday nights. High temperatures will range from the mid-70s to lower 80s on Tuesday.
Wednesday into Thursday
Another shortwave trough will shift east over the Dakotas into the Upper Mississippi River Valley through midweek. The associated front will become quasi-stationary across northeast Iowa and southwest Wisconsin on Wednesday before departing south of the area on Wednesday night through Thursday. Again there is little shear located across the area, so organized convection looks unlikely at this time.
High temperatures will be in the 70s on Wednesday. Low temperatures will range from the upper 40s to upper 50s on Wednesday night. High temperatures will range from the mid-70s to lower 80s on Thursday.
AVIATION /12Z TAFS THROUGH 12Z MONDAY/
Issued at 552 AM CDT Sun Aug 2 2026
Webcam and satellite imagery shows low level SCT deck over KLSE at 12Z TAF issuance although ASOS hasn't observed impacts this morning. Given the observations, included VCFG and SCT for KLSE at 12Z issuance until 14Z.
VFR expected through the 02.12Z TAF period. Similar LIFR FG likely in Wisconsin River Valley tonight with potentially patchy FG affecting KLSE into Monday morning.
ARX WATCHES/WARNINGS/ADVISORIES
WI...None. MN...None. IA...None.
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