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.}

230
SXUS43 KGRB 100411
RECGRB
WIZ048-WIZ049-100515-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
1111 PM CDT Sun Aug 9 2026

.TONIGHT...South winds around 5 knots veering west after
midnight. Patchy fog after midnight. Waves less than 1 foot. Lows
in the mid 60s.
.MONDAY...North winds around 5 knots veering south up to 5 knots
in the afternoon. Patchy fog in the morning. Waves 1 foot or
less. Highs in the lower 80s.
.MONDAY NIGHT...Southeast winds around 5 knots. Slight chance of
showers after midnight. Waves 1 foot or less. Lows in the mid
60s.
.TUESDAY...Southeast winds around 5 knots. Chance of showers.
Waves 1 foot or less. Highs around 80.

$$

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

    
                        

105

ASUS43 KGRB 100559

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

100 AM CDT MON AUG 10 2026



WIZ005-009-010>012-018-019-100700-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLEAR     53  53 100 CALM      29.95  FOG

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    MOCLDY    63  62  97 S3        29.95S

PHILLIPS       MOCLDY    63  63 100 CALM      29.95S

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        MOCLDY    63  61  93 CALM      29.92F FOG

$$



WIZ013-073-100700-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTCLDY    63  62  97 N3        29.90F

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-100700-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        MOCLDY    65  64  97 CALM      29.94F

WAUSAU         PTCLDY    68  66  93 CALM      29.92S

MOSINEE        NOT AVBL

MARSHFIELD     CLEAR     65  64  97 CALM      29.92F

WISC RAPIDS    MOCLDY    68  65  90 N5        29.92S

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA          N/A    N/A N/A N/A MISG        N/A

$$



WIZ038-039-048-051-100700-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOCLDY    66  65  96 CALM      29.89F

APPLETON       PTCLDY    70  68  94 CALM      29.91R

OSHKOSH        CLEAR     66  65  96 CALM      29.89F

FOND DU LAC    PTCLDY    66  65  96 CALM      29.89F

$$



WIZ022-050-052-100700-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      PTCLDY    66  50  57 CALM      29.92R

SHEBOYGAN      CLOUDY    69  67  93 SE3       29.90F

$$



LMZ563-521-522-541>543-100700-

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 0500   69     160/  2/  3 1012.6F

KEWAUNEE LKSHORE 0524          160/  1/  2 1012.1

NORTHPORT PIER   0500           CALM  /  4 1013.5

N MID LAKE BUOY  0540   68 67  220/  6/  8 1012.1F

MENOMINEE LKSHOR 0524   71 67  240/  3/  6 1012.2

$$

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.