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

- Dry conditions and above normal temperatures are expected through early next week.

DISCUSSION

Issued at 1231 AM CDT Thu May 28 2026

Today

High pressure will build across the Upper Mississippi River Valley today. It will provide dry weather for the region. Any showers and storms will be associated with the upstream trough in the omega high across western and southern Iowa. With the passage of the backdoor cold front earlier this morning, high temperatures will range from the mid-70s to mid-80s.

Friday through Tuesday

The ridge associated with the 500 mb omega high will be located across the region. Meanwhile, at the surface, there will be a high located over Michigan. As a result, our winds will primarily range from the northeast to southeast at 5 to 15 mph. These winds will continue to bring very dry air into the region. With high temperatures in the mid- to upper 80s, relative humidities will fall into the 20s and 30s each afternoon. With the extended dry and unusually warm conditions, we could potentially be looking at the beginning of a flash drought and the potential for elevated fire weather concerns.

AVIATION /12Z TAFS THROUGH 12Z FRIDAY/

Issued at 558 AM CDT Thu May 28 2026

FEW-SCT high clouds are expected to continue throughout the day for those south of I-90 and west of the Mississippi River, possibly becoming BKN at times. East to northeast winds up to 15KT this morning will diminish throughout the day, becoming 5-10KT and veering to the southeast as we head into the overnight hours. There is some indication of mist developing along and east of the Mississippi River towards the end of the TAF period which could lead to visibility reductions, but low level dry air and expected overnight cloud coverage would hinder how widespread mist becomes, if it forms at all. All said, confidence in this scenario is not high, only around 10% per the 28.00z HREF, a decrease in probabilities as compared to the 27.12z run.

ARX WATCHES/WARNINGS/ADVISORIES

WI...None. MN...None. IA...None.

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