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.}

606
SXUS43 KGRB 101101
RECGRB
WIZ048-WIZ049-102100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
601 AM CDT Fri Jul 10 2026

.TODAY...Northeast winds around 5 knots. Mostly sunny. Waves less
than 1 foot. Highs in the upper 70s.
.TONIGHT...East winds up to 5 knots. Partly cloudy. Waves less
than 1 foot. Lows in the lower 60s.
.SATURDAY...East winds up to 5 knots. Sunny. Waves less than
1 foot. Highs in the lower 80s.
.SATURDAY NIGHT...Southeast winds around 5 knots. Mostly clear.
Waves less than 1 foot. Lows in the mid 60s.

$$

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

    
                        

419

ASUS43 KGRB 101059

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 AM CDT FRI JUL 10 2026



WIZ005-009-010>012-018-019-101200-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLEAR     50  50 100 CALM      29.96R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLEAR     59  57  95 CALM      29.96S

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    MOCLDY    57  56  96 CALM      29.97R

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-101200-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLEAR     54  54 100 CALM      29.95R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-101200-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         NOT AVBL

MOSINEE        CLEAR     59  59 100 CALM      29.96R HAZE

MARSHFIELD     FOG       60  60 100 CALM      29.98R VSB 1/4

WISC RAPIDS    FOG       62  62 100 CALM      29.97R VSB 1/4

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        MOCLDY    62  62 100 CALM      29.96R FOG

$$



WIZ038-039-048-051-101200-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLEAR     62  61  96 CALM      29.92R

APPLETON       CLEAR     66  64  94 CALM      29.93R

OSHKOSH        CLEAR     66  61  84 CALM      29.92R

FOND DU LAC    CLEAR     65  61  87 CALM      29.93R

$$



WIZ022-050-052-101200-

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  63 100 N3        29.93R

SHEBOYGAN      CLEAR     61  59  93 NE5       29.92R

$$



LMZ563-521-522-541>543-101200-

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 1000   67      10/ 11/ 11 1012.4F

KEWAUNEE LKSHORE 1024          360/  3/  6 1012.9

NORTHPORT PIER   1000          350/  4/  5 1013.9

N MID LAKE BUOY  1040   66 67   30/  8/ 10 1012.7F

MENOMINEE LKSHOR 1024   66 76   10/  5/  6 1013.4

$$

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.