Marine Weather and Tide Forecast for Rib Lake, WI

DISCUSSION
Issued at 231 PM CDT Mon Sep 21 2026

Minimally impactful weather is forecast through this weekend. For the rest of today and tonight an upper-level low will move across southern WI bring and increase in cloud cover to the region. An arc of light showers has developed along the WI/MN border and will slowly drift east through the evening, however, with dry mid-level air in place, don't expect more than a sprinkle to reach central WI for before the precip dries away. While cloud cover tonight will keep temperatures from bottoming out the presence of a cooler air mass will allow lows to reach the low to middle 30s across north- central WI which may result in patchy areas of frost in protected and low laying areas. A similar set up is expected Tuesday night, however, lows be a few degrees warmer as winds become more easterly.

With a Hudson Bay high expected to remain entrenched through next weekend any weak short-waves moving towards the region will struggle to produce any measurable rainfall. The next chance for more widespread rain does not look to come until this high starts to break down and a long wave trough moves passes across the region early next week.

Temperatures this week will gradually trend warmer each day with highs climbing back into the upper 60s to low 70s by the weekend.

AVIATION
for 00Z TAF Issuance Issued at 638 PM CDT Mon Sep 21 2026

VFR conditions are expected for most of the TAF period, with a period of high-end MVFR ceilings possible overnight into Tuesday morning. Light rain showers and sprinkles have been steadily advancing toward the area this afternoon and look to push into portions of central and east-central WI. Have not included as no aviation impacts are expected and the dry northeast flow should slowly eat away at its advancement and limit what makes it to the ground. Otherwise, high clouds over 15,000 ft will continue to spread across the region at times.

East or northeast winds are expected through the TAF period, gusting to ~15 kts, locally higher near the bay/Lake Michigan.

MARINE
Issued at 231 PM CDT Mon Sep 21 2026

The primary immediate weather hazard involves elevated winds and high waves on the Bay and Lake. The pressure gradient between the robust high pressure over northern Ontario and the advancing low pressure to our west is producing onshore winds to 20 kts and wave heights to 6 feet on Lake Michigan, and 3 to 4 feet on the Bay of Green Bay this afternoon.

The gusty northeast winds will veer to the east on Tuesday and remain gusty in the 20-25 kt range. As a result, Small Craft Advisories and a Beach Hazards Statement look to remain on track.
Winds and waves might subside enough for an early cancellation on the Bay late tonight or Tuesday, but conditions will undoubtedly remain choppy with gusts to 20 kts. Therefore no changes planned to the current marine headlines at this time. Winds and waves will gradually subside late Tuesday into Wednesday as the pressure gradient begins to relax.

GRB WATCHES/WARNINGS/ADVISORIES
Frost Advisory from midnight tonight to 7 AM CDT Tuesday for WIZ005-010>012-018.

Beach Hazards Statement through Tuesday evening for WIZ022-040- 050.