textproduct: La Crosse

KEY MESSAGES

- Mainly dry from Wednesday into Friday Night.

- Becoming hotter this weekend with 90s returning for many on Sunday.

DISCUSSION

Issued at 1223 PM CDT Tue Jul 21 2026

Through Tonight

A Canadian cold front will move southeast through the area this afternoon and evening. With cyclonic flow and cold air advection aloft, the CAMs are indicating isolated to scattered showers mainly located north of Interstate 90. At this time, kept the 20 percent chance of showers across north-central Wisconsin. High temperatures will range from the lower 70s to lower 80s.

Low temperatures will range from the mid-40s to mid-50s tonight.

Wednesday through Friday night

High pressure will provide mainly dry weather from Wednesday through Friday night. Even though there is northwest flow aloft, the fires along the US/Canadian border are far smaller than those in Canada's boreal forest, so the HRRR is continuing to show very low concentrations of surface smoke and the concentrations of smoke at 6K feet also remain generally light too.

High temperatures will gradually warm through Friday. High temperatures will be in the lower and mid-70s on Wednesday, and range from the mid-70s to lower 80s on Thursday and Friday.

Low temperatures will mainly be in the 50s and lower 60s.

Weekend

A warm front will move east and northeast through the region on Saturday night and Sunday morning. A mesoscale convective complex will likely develop over the Northern Plains and then track into the Upper Mississippi River Valley during the overnight and Sunday morning. Due to the uncertainty on its track, kept rain chances in the 20 to 50 percent range. With the 3-6 km shear less than 30 knots, severe weather chances for organized convection remains on the low side.

High temperatures will be in the lower to mid-80s on Saturday and ranges from the mid-80s to lower 90s.

AVIATION /00Z TAFS THROUGH 00Z THURSDAY/

Issued at 620 PM CDT Tue Jul 21 2026

VFR conditions are forecast at the terminals over the next 24 hours. Mid level clouds continue to stream in from the north but they should lift overnight into the daytime on Wednesday. The wind will generally remain out of the north to northeast during this TAF cycle. Occasional wind gusts up to 20 kts are possible for another hour or two but the wind will decrease this evening down to 10 kts or less through Wednesday afternoon.

ARX WATCHES/WARNINGS/ADVISORIES

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