Lake Winnebago Forecast

Lake Winnebago Forecast About these forecasts

Forecast Graphics

Lake Winnebago Recreational Forecast
^{Note: Experimental product. Check product creation time to verify this is a current forecast.}

534
SXUS43 KGRB 010741
RECGRB
WIZ048-WIZ049-012100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
241 AM CDT Thu Oct 1 2026

.EARLY THIS MORNING...Southwest winds 5 to 10 knots. Patchy fog.
chance of showers and slight chance of thunderstorms. Waves
1 foot or less. Near steady temperature in the mid 60s.
.TODAY...West winds 5 to 10 knots. Patchy fog in the morning.
showers in the morning, then chance of showers in the afternoon.
Waves 1 foot or less. Near steady temperature in the mid 60s.
.TONIGHT...North winds 5 to 15 knots. Mostly cloudy. Waves 1 to
3 feet. Lows in the upper 40s.
.FRIDAY...Northwest winds 5 to 15 knots. Sunny. Waves 1 to
3 feet. Highs in the lower 60s.
.FRIDAY NIGHT...West winds around 5 knots veering northeast after
midnight. Mostly clear. Waves 1 foot or less. Lows in the mid
40s.

$$

Local Observations
^{Note: Check product creation time to verify this is a current product.}

    
                        

842

ASUS43 KGRB 010810

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

300 AM CDT THU OCT 01 2026



WIZ005-009-010>012-018-019-010900-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOCLDY    61  59  93 SW5       29.79S

MANITOWISH WTR CLOUDY    61  60  98 SW3       29.81F FOG

ARBOR VITAE    CLOUDY    61  61 100 W5        29.81F FOG

EAGLE RIVER    CLOUDY    63  63 100 W6        29.81F

LAND O LAKES   CLOUDY    66  66 100 W3        29.82F FOG

RHINELANDER    CLOUDY    63  62  97 W5        29.82F

PHILLIPS       FOG       60  60 100 CALM      29.81S VSB 1

ANTIGO         CLOUDY    67  67 100 SW5       29.84S FOG

TOMAHAWK       CLOUDY    65  64  96 CALM      29.82S VSB<1/4

MERRILL        CLOUDY    69  68  98 SW3       29.82S FOG

$$



WIZ013-073-010900-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOCLDY    61  60  97 CALM      29.78S

MARINETTE      CLOUDY    65  65 100 SW3       29.81S FOG

OCONTO         CLOUDY    65  65  99 W3        29.82S

$$



WIZ017-030-035>037-045-010900-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    64  64 100 CALM      29.84R VSB 1/4

WAUSAU           N/A     65  65 100 CALM      29.82F FOG

MOSINEE        FOG       64  64 100 SW7       29.83S VSB 3/4

MARSHFIELD     FOG       65  65 100 SW5       29.83S VSB 1/2

WISC RAPIDS    CLOUDY    66  65  96 W6        29.83F FOG

STEVENS POINT  FOG       67  67  99 SW5       29.83F VSB 1

WAUPACA        CLOUDY    64  63  99 CALM      29.86S FOG

SHAWANO        CLOUDY    67  67 100 CALM      29.83S FOG

CLINTONVILLE   FOG       66  66  99 SW3       29.84S VSB 1

WAUTOMA        RAIN      65  65 100 CALM      29.84S FOG

$$



WIZ038-039-048-051-010900-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    66  65  96 SW5       29.82R

APPLETON       CLOUDY    66  66 100 SW7       29.84R FOG

OSHKOSH        LGT RAIN  65  64  97 SW3       29.83S FOG

FOND DU LAC    LGT RAIN  64  64 100 SW5       29.84R

$$



WIZ022-050-052-010900-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    63  62  96 W3        29.81R FOG

WASHINGTON ISL CLOUDY    64  61  88 SW6       29.80S FOG

STURGEON BAY   CLOUDY    66  64  94 W6        29.82S FOG

MANITOWOC      LGT RAIN  65  64  97 W6        29.83S

SHEBOYGAN      LGT RAIN  64  63  96 SW3       29.83S FOG

$$



LMZ563-521-522-541>543-010900-

LAKESHORE



STATION/POSITION TIME  TEMP    WIND        PRES    VSBY  WAVE

                       AIR SEA DIR/SP/G                  HT/PER

                 (UTC) (F)     (DEG/KT/KT) (MB)    (MI)  (FT/S)

SHEBOYGAN LKSHOR 0730   64     190/  7/  8 1009.9S

KEWAUNEE LKSHORE 0724          240/  2/  5 1009.3

NORTHPORT PIER   0700          160/  3/  5 1009.8

N MID LAKE BUOY  0730   65 65  220/ 12/ 14 1008.6S

CHAMBERS ISLAND  0740   65     170/  3/  5   N/A

MENOMINEE LKSHOR 0724   65 64  260/  4/  8 1009.3

$$

Additional Data
^{Note: Check data times to verify information is current.}

Lake Winnebago Buoy
- INFOS WinnGB Project

Lake Winnebago Water Temperatures
- Latest hourly reading
- Last 21 days
- Daily stream water temps -- See bottom of report; including Lk Winnebago

About these Forecasts

This forecast is available during the boating season, usually April through the end of October. The forecast, both graphical and text, is generated several times per day with updates made when weather conditions become unrepresentative. Use with caution. Be sure to check the product creation time to verify that the forecast you are viewing is current. Forecasts are valid for either 36 or 48 hours dependent on issuance time. Forecast elements include winds, significant wave heights, sensible weather, and associated restrictions to visibility if applicable over the open lake waters.

A wave model is run by NWS in Green Bay which produces the wave height forecast for Lake Winnebago. Forecasters at NWS Green Bay develop the wind forecast that is used in the wave model. The wave model has been used on the Great Lakes and has been shown to do reasonably well.

The latest observations for sites along the lake are also being provided. You may ask “Are these really the kind of winds you can expect on the open area of a lake or reservoir?” Any lake recreationalist will probably tell you that the winds are often found to be stronger than what was forecast or seen at the surrounding observation sites. Studies have shown that there is approximately a 4 to 5 mph increase in sustained wind speeds on open bodies of water compared to the nearest airport. Keep in mind that this difference is over an open waterway and is not necessarily what one would find if they were boating in a protected pocket of the waterway or near a wind protected structure such as a tree line, an island or point.

Click here for more answers to some questions you may have regarding the Lake Winnebago Recreational Forecast.

We greatly value your input into ways to make the forecast and this website more useful. Please contact nws.greenbay@noaa.gov with any suggestions, comments or questions.