Marine Weather and Tide Forecast for Green Bay, WI
 | Sunrise 6:38 AM Sunset 4:33 PM Moonrise 6:01 AM Moonset 4:22 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
LMZ522 Expires:202611071100;;400141 Fzus53 Kgrb 070624 Nshgrb
nearshore marine forecast national weather service green bay wi 1224 am cst Sat nov 7 2026
for waters within five nautical miles of shore on lake michigan
lmz521-522-071100- green bay south of line from cedar river to rock island passage and north of a line from oconto wi to little sturgeon bay wi- green bay south of line from oconto wi to little sturgeon bay wi- 1224 am cst Sat nov 7 2026
Rest of the night - NW wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy.
Saturday - NW wind 5 to 10 kts backing sw 10 to 15 kts in the late morning and afternoon. Waves 2 ft or less. Mostly Sunny.
Saturday night - SW wind 10 to 15 kts veering W 15 to 25 kts in the late evening and overnight. Waves 1 to 3 ft building to 2 to 4 ft after midnight. Partly cloudy. A small craft advisory may be needed.
Sunday - W wind 15 to 25 kts veering nw 10 to 15 kts early in the afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. Sunny in the morning then becoming partly Sunny.
nearshore marine forecast national weather service green bay wi 1224 am cst Sat nov 7 2026
for waters within five nautical miles of shore on lake michigan
lmz521-522-071100- green bay south of line from cedar river to rock island passage and north of a line from oconto wi to little sturgeon bay wi- green bay south of line from oconto wi to little sturgeon bay wi- 1224 am cst Sat nov 7 2026
LMZ500
No data
No data
7 Day Forecast for Marine Location Near Green Bay, WI
NEW! Add second zone forecast
FXUS63 KGRB 070518 AFDGRB
Area Forecast Discussion National Weather Service Green Bay WI 1118 PM CST Fri Nov 6 2026
Updated aviation portion for 06Z TAF issuance
KEY MESSAGES
- Dry until the middle of next week with a warming trend. Peak of warmth will be Monday and Tuesday.
- Northwest winds may gust over 30 mph on Sunday, especially north.
- Turning cooler by late next week with return of lake effect rain and snow showers.
DISCUSSION
Issued at 1030 PM CST Fri Nov 6 2026
High pressure crossing into Saturday settles toward central Plains and Ohio Valley by Sunday. Patchy ground fog possible beneath the high tonight into early Saturday. Airmass very dry so not expecting much coverage to fog, but with temps below freezing and pavement temps dropping below freezing up north, a few slippery spots could occur.
Cold front (more of a wind shift) sweeping through late Saturday night into Sunday along with pressure rises and winds up to 35 kts in the mixed layer may push wind gusts 30-35 mph over the northwoods, with 20-30 mph elsewhere.
Highs on Sunday reach the lower to middle 50s, which is back above average. Warmer temperatures continue on Monday and Tuesday, with highs maybe reaching 60. However, probabilities for highs reaching above 60F have diminished compared to what was shown last night. Stronger cold front tied to broad upper troughing drops across the region on Wednesday, Veterans Day. Low chances for rain now showing up in the forecast on into Thursday, matching what was shown by LREF data yesterday. Not a widespread signal for precip, mainly just impacting lake effect areas of north-central and along Door County/Lake Michigan. Even on the LREF probabilities for more than 0.25 inch of precip are less than 5%, so if this occurs it looks pretty light. Hint of colder air is showing up more now into late next week, so seems could see some rain/snow or snow at times for the lake effect areas of the north as 850mb temps drop to around -8c. During this most recent cool down, 850mb temps were -4c to -6c, so could end up even cooler later next week. Extended MOS guidance from GFS and ECMWF points to this as well.
AVIATION
for 06Z TAF Issuance Issued at 1118 PM CST Fri Nov 6 2026
Skies are mostly clear this evening, except for lingering lake stratocu across Door County. Warm air advection altocu over MN will spread into central WI late tonight into Saturday morning.
Some patchy fog/stratus is possible overnight, especially across north-central Wisconsin and may affect KRHI at times. The rest of Saturday will feature mix of mid and high clouds, along with MVFR to low-end scattered cu developing in the afternoon. Clouds then increase Saturday evening with some LLWS developing across central and north-central Wisconsin as west winds just above the surface increase to 35-40 kts.
Winds will be less than 10 kts, shifting from NW tonight to WSW on Saturday.
GRB WATCHES/WARNINGS/ADVISORIES
None.
Area Forecast Discussion National Weather Service Green Bay WI 1118 PM CST Fri Nov 6 2026
Updated aviation portion for 06Z TAF issuance
KEY MESSAGES
- Dry until the middle of next week with a warming trend. Peak of warmth will be Monday and Tuesday.
- Northwest winds may gust over 30 mph on Sunday, especially north.
- Turning cooler by late next week with return of lake effect rain and snow showers.
DISCUSSION
Issued at 1030 PM CST Fri Nov 6 2026
High pressure crossing into Saturday settles toward central Plains and Ohio Valley by Sunday. Patchy ground fog possible beneath the high tonight into early Saturday. Airmass very dry so not expecting much coverage to fog, but with temps below freezing and pavement temps dropping below freezing up north, a few slippery spots could occur.
Cold front (more of a wind shift) sweeping through late Saturday night into Sunday along with pressure rises and winds up to 35 kts in the mixed layer may push wind gusts 30-35 mph over the northwoods, with 20-30 mph elsewhere.
Highs on Sunday reach the lower to middle 50s, which is back above average. Warmer temperatures continue on Monday and Tuesday, with highs maybe reaching 60. However, probabilities for highs reaching above 60F have diminished compared to what was shown last night. Stronger cold front tied to broad upper troughing drops across the region on Wednesday, Veterans Day. Low chances for rain now showing up in the forecast on into Thursday, matching what was shown by LREF data yesterday. Not a widespread signal for precip, mainly just impacting lake effect areas of north-central and along Door County/Lake Michigan. Even on the LREF probabilities for more than 0.25 inch of precip are less than 5%, so if this occurs it looks pretty light. Hint of colder air is showing up more now into late next week, so seems could see some rain/snow or snow at times for the lake effect areas of the north as 850mb temps drop to around -8c. During this most recent cool down, 850mb temps were -4c to -6c, so could end up even cooler later next week. Extended MOS guidance from GFS and ECMWF points to this as well.
AVIATION
for 06Z TAF Issuance Issued at 1118 PM CST Fri Nov 6 2026
Skies are mostly clear this evening, except for lingering lake stratocu across Door County. Warm air advection altocu over MN will spread into central WI late tonight into Saturday morning.
Some patchy fog/stratus is possible overnight, especially across north-central Wisconsin and may affect KRHI at times. The rest of Saturday will feature mix of mid and high clouds, along with MVFR to low-end scattered cu developing in the afternoon. Clouds then increase Saturday evening with some LLWS developing across central and north-central Wisconsin as west winds just above the surface increase to 35-40 kts.
Winds will be less than 10 kts, shifting from NW tonight to WSW on Saturday.
GRB WATCHES/WARNINGS/ADVISORIES
None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| GBWW3 | 2 mi | 47 min | NNW 8.9G | 37°F | 30.17 | |||
| KWNW3 - 9087069- Kewaunee, WI | 26 mi | 47 min | NW 4.1G | 30.14 | ||||
| MN4 - 9087088 - Menominee, MI | 45 mi | 47 min | WNW 6G | 33°F | 55°F | 30.16 | 30°F |
Wind History for Kewaunee MET, WI
toggle option: (graph/table)
Link to 5 hour of 5 minute data for KGRB
Terminal Aerodrome Forecast (TAF) for KGRB
Wind History Graph: GRB
(wind in knots)
GEOS Local Image of great lakes
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Green Bay, WI,
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