Marine Weather and Tide Forecast for Cedar Grove, WI

SHORT TERM
Issued 404 PM CST Mon Dec 8 2025

Tonight through Wednesday:

On and off flurries have continued throughout the afternoon, but are finally showing some signs of progressing northeastward out of the area. Late tonight, a frontogenesis-driven band of snow will push through central Wisconsin, with more scattered snow showers across southern Wisconsin. Generally expecting trace to up to an inch of snow with this band, with the higher accumulations toward Fond du Lac and Sheboygan Counties. After the frontogenesis band moves eastward into Lake Michigan, lift continues as low pressure makes its closest approach and the mid levels (where the dendritic growth zone is located) dry out.
Therefore, expecting a period of freezing drizzle to develop behind the snowfall. Expecting a trace of ice accretions across most regions, as any drizzle is expected to be patchy and light.
Moisture in the low levels will exit west to east through the morning commute timeframe.

Southwesterly winds will continue through Tuesday, with temperatures beginning to rise during the afternoon and evening hours as advection overtakes the diurnal temperatures. Still, expecting temperatures to remain around 32 degrees throughout the afternoon and evening as a strong clipper system approaches.

The main concern with this clipper system remains the uncertainty in low placement on modeling. Ensembles generally agree that the low would traverse central to northern Wisconsin, bringing the heaviest snowfall across these regions. However, mesoscale models and the operational models are showing a strong southerly trend, bringing the low across southern Wisconsin and therefore bringing the heaviest snow across the I-90/I-94 corridor. This heaviest band is expected to bring 3 to 5 inches of snow, primarily during the Tuesday evening commute through the overnight hours. Meanwhile, areas to the south of the low track will see a mix of snow, rain and potentially some freezing rain. Even if air temperatures rise above freezing, ground temperatures are expected to remain below freezing, leading to slick spots on untreated surfaces when rain falls on them. A Winter Weather Advisory for snow and wintry mix has been issued for Marquette and Columbia Counties eastward from 6 PM CST Tuesday to 6 AM CST Wednesday. This is due to the highest confidence in travel impacts from both snow and wintry mix.
Additional advisories may be issued farther south, including the I-94/I-90 corridor, as impacts become more clear.

Low pressure pivots eastward into Wednesday morning, with a quick transition back to all snow, and plenty of dry air working in behind the system to create more of a snow shower set up than a steady snowfall concern. Northwesterly winds will also become gusty as the low occludes and a much colder Canadian airmass approaches from the northern Plains. Gusts around 30 mph are possible.

MH

LONG TERM
Issued 404 PM CST Mon Dec 8 2025

Wednesday night through Monday:

Brisk nwly sfc winds and any lingering snow showers will diminish Wed evening followed by a quiet Thu. The extended models maintain nwly flow aloft through the weekend with additional shortwave troughs to pass through the Great Lakes. The upper waves will become increasingly stronger, mainly bringing an impressive surge of arctic air into srn WI for the weekend, but also 40 percent chances for light snow centered around Fri. Wind chill temps of 15 below to 25 below zero are forecast for late Fri nt-Sat AM and again late Sat nt-Sun AM. Upper ridging and a sfc ridge may finally arrive on Sunday followed by another shortwave trough in nwly flow aloft for Mon, including 20-30 percent chances for light snow.

Gehring

AVIATION
Issued 404 PM CST Mon Dec 8 2025

VFR conditions will dominate southern Wisconsin this evening, with MVFR cloud cover moving in tonight as precipitation approaches. Expecting a band of snow showers with 800-1200 ft ceilings to progress from west to east late tonight, with patchy freezing drizzle developing thereafter. Expect a trace to a few tenths of an inch of snow at most terminals, but up to an inch is possible at SBM/FLD. Trace icing is possible within freezing drizzle. Freezing drizzle will taper off from west to east overnight.

Southerly winds through this evening will shift to southwesterly tonight, then to westerly into Tuesday morning. Winds will shift back to southwesterly Tuesday afternoon ahead of the next system approaching. Expect snow across central Wisconsin Tuesday evening, with rain/freezing rain developing across far southern Wisconsin, and a wintry mix of snow and rain in between.
Although specific amounts of icing and snow are in question for southern Wisconsin, confidence is high in at least an inch of snow, and icing of a trace to a few hundreths on untreated surfaces. Across central Wisconsin, expecting snowfall of 2 to 5 inches with trace icing.

MH

MARINE
Issued 404 PM CST Mon Dec 8 2025

Low pressure over northern North Dakota will deepen as it moves across Lake Superior on Tuesday. As a result, southwest gales are expected to develop for the north half of Lake MI tonight.
The winds will then gradually weaken through the day on Tuesday as the low moves away.

A much stronger low will then track from Minnesota across southern Lake MI and into lower MI Tuesday night. Southwest to westerly gales may develop ahead of the low over the south half of the lake Tuesday night, followed by the potential for northerly gales on Wednesday after the low passes. A Gale Watch is now in effect for the south half Tuesday night and Wednesday.
The brisk winds will then gradually diminish Wednesday night. A period of northwesterly gales may then return Friday night into Saturday as a strong arctic front moves through the Great Lakes region. Heavy freezing spray may develop.

In nearshore regions, expect conditions hazardous to small craft to develop tonight as southwesterly gusty winds develop. Winds and waves will briefly diminish before picking back up Tuesday night and continuing through Wednesday. A few gale force wind gusts are possible during this time. Concerns for gusty winds and elevated wave conditions return Friday into the weekend.

Gehring/MH

MKX WATCHES/WARNINGS/ADVISORIES
WI
Winter Weather Advisory
WIZ046-WIZ047-WIZ051-WIZ052-WIZ057- WIZ058-WIZ059-WIZ060...6 PM Tuesday to 6 AM Wednesday.

LM
Gale Watch
LMZ080-LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777- LMZ779-LMZ868-LMZ870-LMZ872-LMZ874-LMZ876-LMZ878...9 PM Tuesday to 6 PM Wednesday.

Gale Warning...LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565- LMZ567-LMZ868...10 PM Monday to 6 AM Tuesday.

Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646...7 PM Monday to noon Tuesday.