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.}

180
SXUS43 KGRB 021231
RECGRB
WIZ048-WIZ049-022100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
731 AM CDT Sat May 2 2026

...FREEZE WARNING IN EFFECT UNTIL 8 AM CDT THIS MORNING...

.TODAY...West winds around 5 knots. Areas of frost in the
morning. Waves 1 foot or less. Highs in the lower 50s.
.TONIGHT...Southwest winds 5 to 15 knots. Chance of rain showers
after midnight. Waves 1 foot or less. Lows in the mid 40s.
.SUNDAY...Southwest winds 10 to 15 knots. Chance of rain showers.
Waves 1 to 3 feet. Highs in the upper 50s.
.SUNDAY NIGHT...West winds 5 to 10 knots. Partly cloudy. Waves
1 foot or less. Lows in the mid 40s.

$$

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

    
                        

522

ASUS43 KGRB 021459

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

1000 AM CDT SAT MAY 02 2026



WIZ005-009-010>012-018-019-021600-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       SUNNY     48  21  34 W8        30.02F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    SUNNY     47  21  35 W9        30.03F

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-021600-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  SUNNY     46  23  40 NW6       30.01F

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-021600-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         NOT AVBL

MOSINEE        SUNNY     48  23  37 SW9       30.04F

MARSHFIELD     SUNNY     49  24  37 VRB6      30.04F

WISC RAPIDS    SUNNY     51  22  31 SW7       30.06F

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        SUNNY     49  23  36 VRB3      30.08F

$$



WIZ038-039-048-051-021600-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  SUNNY     46  22  38 CALM      30.07F

APPLETON       SUNNY     48  23  37 W6        30.08F

OSHKOSH        SUNNY     47  22  37 NW6       30.08F

FOND DU LAC    SUNNY     47  21  35 W6        30.09F

$$



WIZ022-050-052-021600-

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     47  23  38 NW10      30.09F

SHEBOYGAN      SUNNY     47  25  42 W8        30.08F

$$



LMZ563-521-522-541>543-021600-

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 1400   43     300/  9/ 11 1019.5S

KEWAUNEE LKSHORE 1424          100/  4/  5 1018.3

NORTHPORT PIER   1400          260/  2/  8 1019.3

MENOMINEE LKSHOR 1424   42 49  230/  3/ 10 1017.6

$$

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.