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.}

348
SXUS43 KGRB 060621
RECGRB
WIZ048-WIZ049-060900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
121 AM CDT Sun Sep 6 2026

.REST OF THE NIGHT...Northeast winds around 5 knots. Mostly
clear. Waves 1 foot or less. Lows around 60.
.SUNDAY...East winds around 5 knots. Mostly sunny. Waves 1 foot
or less. Highs in the upper 70s.
.SUNDAY NIGHT...Southeast winds around 5 knots. Partly cloudy.
Waves 1 foot or less. Lows around 60.
.MONDAY...South winds 5 to 10 knots. Sunny. Waves 1 foot or less.
Highs in the upper 70s.

$$

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

    
                        

258

ASUS43 KGRB 060659

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 AM CDT SUN SEP 06 2026



WIZ005-009-010>012-018-019-060800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOCLDY    65  63  93 CALM      30.12S

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    PTCLDY    59  58  96 CALM      30.15S

PHILLIPS       CLOUDY    66  65  96 CALM      30.14R

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-060800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLEAR     57  56  96 CALM      30.13R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-060800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         NOT AVBL

MOSINEE        NOT AVBL

MARSHFIELD     MOCLDY    63  63 100 NE3       30.13S

WISC RAPIDS    PTCLDY    61  61 100 CALM      30.12S FOG

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        CLEAR     59  59 100 CALM      30.11S

$$



WIZ038-039-048-051-060800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLEAR     58  57  97 NW5       30.10R

APPLETON       NOT AVBL

OSHKOSH        CLEAR     62  58  86 CALM      30.08F

FOND DU LAC    CLEAR     60  59  96 NW3       30.09S

$$



WIZ022-050-052-060800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      CLEAR     63  61  93 N6        30.09S

SHEBOYGAN      CLEAR     62  61  96 CALM      30.08R

$$



LMZ563-521-522-541>543-060800-

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 0640   68     360/  8/  9 1018.1R

KEWAUNEE LKSHORE 0624           70/  8/  9 1018.4

NORTHPORT PIER   0600           CALM  /  1 1020.0

N MID LAKE BUOY  0640   70 70  100/  6/  8 1018.9F

CHAMBERS ISLAND  0640   65      CALM  /  2   N/A

MENOMINEE LKSHOR 0624   68 74  360/  6/  7 1019.4

$$

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.