LA CROSSE, Wis. – A gray Halloween dawn settled over the Mississippi River Valley with fog, mist, and the first true bite of late-fall air. Wet pavement glistened under streetlights early Friday as patchy fog and drizzle rolled across western Wisconsin, hinting at the seasonal turn just ahead.
According to the National Weather Service in La Crosse, scattered showers will continue into the day before clearing late Friday night. While the system stays mostly rain, models show enough cooling aloft to produce a brief mix or stray flurry across high ridges north of I-90 by early Saturday. Temperatures near 34°F could allow frost to form before sunrise, especially in rural valleys and sheltered spots.
Saturday brightens up quickly, with highs in the upper 40s and calmer winds. The clear skies, however, will invite another cold plunge — lows dipping to the upper 20s may mark the coldest reading so far this season. Garden hoses, decorative plants, and outdoor taps should be secured before evening.
Sunday turns sunnier and slightly milder, offering a break before another moisture push late Sunday night. Forecasters say a passing front could deliver light showers or drizzle into early Monday, followed by a return to sunshine and mid-50s warmth.
After that, models hint at a more active pattern next week, with the first measurable snow chances appearing across northern Wisconsin. For now, this Halloween weekend will close with a classic fall mix — cool rain, crisp air, and the first early whispers of winter.
Five-Day Forecast for La Crosse, WI:
Fri: 48/35 – Scattered showers; breezy west winds developing.
Sat: 48/29 – Clearing skies; possible early frost.
Sun: 51/39 – Mostly sunny; light south breeze.
Mon: 55/34 – Morning clouds; turning sunny and mild.
Tue: 54/33 – Mostly clear; cool morning start.
