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.}

730
SXUS43 KGRB 241026
RECGRB
WIZ048-WIZ049-242100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
526 AM CDT Thu Sep 24 2026

.EARLY THIS MORNING...East winds around 5 knots. Mostly clear.
Waves 1 foot or less. Near steady temperature in the mid 50s.
.TODAY...East winds 5 to 10 knots. Patchy fog in the morning.
Waves 1 foot or less. Highs in the upper 60s.
.TONIGHT...Southeast winds 5 to 10 knots. Mostly cloudy. Waves
1 foot or less. Lows in the upper 50s.
.FRIDAY...Southeast winds around 5 knots. Partly sunny. Waves
1 foot or less. Highs in the upper 60s.
.FRIDAY NIGHT...Southeast winds up to 5 knots. Mostly clear.
Waves 1 foot or less. Lows in the lower 50s.

$$

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

    
                        

666

ASUS43 KGRB 241359

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

900 AM CDT THU SEP 24 2026



WIZ005-009-010>012-018-019-241500-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOSUNNY   51  48  89 SE10      30.41F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    51  51 100 S5        30.44R

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-241500-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    46  46 100 NW3       30.44S FOG

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-241500-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         CLOUDY    52  52 100 E6        30.42S FOG

MOSINEE        FOG       52  52 100 E5        30.42R VSB 1

MARSHFIELD     CLOUDY    51  51 100 E5        30.41S

WISC RAPIDS    PTSUNNY   55  53  93 E3        30.41R

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        MOSUNNY   56  54  93 E5        30.41S

$$



WIZ038-039-048-051-241500-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  SUNNY     59  54  83 E3        30.42S

APPLETON       MOSUNNY   57  55  94 VRB3      30.42R

OSHKOSH        SUNNY     60  55  83 E7        30.40R

FOND DU LAC    SUNNY     59  55  87 E5        30.40S

$$



WIZ022-050-052-241500-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      SUNNY     60  56  86 CALM      30.42S

SHEBOYGAN      SUNNY     61  56  83 NE5       30.40S

$$



LMZ563-521-522-541>543-241500-

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 1320   62     110/  9/ 10 1029.5

KEWAUNEE LKSHORE 1324          110/  8/ 11 1029.4

NORTHPORT PIER   1300          110/ 11/ 13 1031.5

N MID LAKE BUOY  1320   60     120/ 10/ 14 1031.1

CHAMBERS ISLAND  1340   61      60/  4/  7   N/A

MENOMINEE LKSHOR 1324   60 64  110/  6/  8 1030.1

$$

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.