textproduct: La Crosse

KEY MESSAGES

- Warmer than normal temperatures continue through the forecast, warmest, record temperatures expected for Wednesday.

- Precipitation chances Wednesday night and through the weekend.

DISCUSSION

Issued at 100 AM CDT Tue Oct 27 2026

Well Above Normal Temperatures Wednesday:

Persistently variable and low confidence pattern through the rest of the week. Initial low confidence precipitation chances continue grazing locally western counties from southeast Minnesota into central Wisconsin overnight through Tuesday night, with a band of lighter showers potentially poking northeast and grazing locally southern peripheral counties from northeast Iowa into southwest Wisconsin.

A tightening low level perturbation from the Rockies through the central CONUS provides enhanced low level warm air advection Wednesday, likely resulting in relatively weak warm temperature records being broken.

Wednesday Night Rainfall:

Subsequent impact from accompanying increased low level moisture will be widespread preciptiation chances across the forecast area. Confidence in available forcing as the front continues shifting east remains the inherent forecast challenge. Most recent (27.18Z) LREF (GEFS/EPS/GEPS) have increased spatial coverage for 100% probabilities of 0.1" of rainfall in 24 hours, primarily Wednesday night. Timing confidence initially in the 7PM-10PM window along western counties, shifting east into the overnight hours.

Low Confidence In A Wet Weekend:

Subsequent rainfall potential Friday night and through the weekend has increased/decreased probabilities for 0.1" of rainfall in most recent GEFS/EPS compared to their respective previous runs. Although intra-LREF member confidence varies, inter-model agreement has increased in most recent runs on synoptic pattern with influence from the southeastern U.S. synoptic anticyclone mostly shunted southeast of the forecast area, permitting low level moisture advection to penetrate towards the forecast area as it lifts through much of the central CONUS, as eventual cyclogenesis advects east across the Missouri and Mississippi River Valleys. Location of the low center and accompanying cyclogenesis will determine local weather impacts through the weekend.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 553 AM CDT Tue Oct 27 2026

A negatively tilted trough will move northeast through the region this afternoon and tonight. This will keep clouds across the area through the TAF period. There may be even some isolated to scattered showers. Ceilings will be VFR primarily between 5 and 13K today. There will be some MVFR clouds in southeast Minnesota and north-central Wisconsin tonight. Winds will shift from east and southeast this morning to southerly for this afternoon and continue through tonight. Wind speeds will primarily range from 10 to 15 knots with gusts between 15 and 25 knots.

CLIMATE

Issued at 100 AM CDT Tue Oct 27 2026

Record or near record temperatures Wednesday (Record/Forecast):

La Crosse, WI

Date High Temperature Warm Low Temperature ----- --------------- --------------- 10/28 75F (1945) / 73F 57F (1881) / 56F

Rochester, MN

Date High Temperature Warm Low Temperature ----- --------------- --------------- 10/28 73F (2024) / 70F 54F (1989) / 54F

ARX WATCHES/WARNINGS/ADVISORIES

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