996 FXUS63 KARX 291734 AFDARXArea Forecast Discussion National Weather Service La Crosse WI 1234 PM CDT Mon Sep 29 2025
.KEY MESSAGES...
- It will remain dry with above-normal temperatures through Friday.
- Small rain chances return to the forecast for next weekend.
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.DISCUSSION... Issued at 1233 PM CDT Mon Sep 29 2025
Tonight
A shortwave trough will move just to our west and north tonight. Soundings remain rather dry, so not anticipating much of a chance of rain. Low temperatures will range from the mid-50s to lower 60s.
Tuesday through Friday
A 500 mb ridge of high pressure will keep the area dry and unseasonably warm (10 to 15 degrees above normal). High temperatures will primarily range from the upper 70s to mid-80s. There might be a small chance of showers just west and northwest of the area on Wednesday night. Other than that the Upper Midwest looks to remain dry.
Next Weekend
The 500 mb ridge slides just far enough east that some shortwave troughs ejecting out of the western longwave trough may bring some rain chance to the area. In addition, there are some indications that a surface front may meander across the region. High temperatures will range from mid-70s to mid-80s.
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.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/... Issued at 1233 PM CDT Mon Sep 29 2025
A shortwave trough will move to the west and north of the area tonight. This system will produce some 3 to 15K foot clouds west of the Mississippi River and 15-25K elsewhere tonight and Tuesday morning. In addition, a well-mixed boundary layer should inhibit the fog potential.
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.ARX WATCHES/WARNINGS/ADVISORIES... WI...None. MN...None. IA...None.
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DISCUSSION...Boyne AVIATION...Boyne
NWS ARX Office Area Forecast Discussion