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.}

963
SXUS43 KGRB 232301
RECGRB
WIZ048-WIZ049-240900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
601 PM CDT Sat May 23 2026

.TONIGHT...Southeast winds 5 to 10 knots veering south after
midnight. Slight chance of thunderstorms through the night.
Chance of rain showers after midnight. Waves less than 1 foot.
Lows in the mid 50s.
.SUNDAY...West winds 5 to 10 knots. Patchy fog in the morning.
Waves less than 1 foot. Highs in the lower 70s.
.SUNDAY NIGHT...Southwest winds around 5 knots. Slight chance of
rain showers after midnight. Waves less than 1 foot. Lows in the
upper 50s.
.MONDAY...Southwest winds 5 to 10 knots. Mostly sunny. Waves less
than 1 foot. Highs in the mid 70s.

$$

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

    
                        

979

ASUS43 KGRB 232259

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 PM CDT SAT MAY 23 2026



WIZ005-009-010>012-018-019-240000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    54  54 100 N3        29.97R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    LGT RAIN  64  52  66 SW8       29.96R

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    65  50  58 S6        29.98R

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        LGT RAIN  62  54  76 CALM      29.96S

$$



WIZ013-073-240000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    60  51  72 SE13G20   29.99S

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-240000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    60  60  97 SE3       29.96F

WAUSAU         NOT AVBL

MOSINEE        CLOUDY    66  54  63 S6        29.96S

MARSHFIELD     LGT RAIN  62  57  83 W6        29.97R

WISC RAPIDS    CLOUDY    69  55  60 CALM      29.96S

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        CLOUDY    72  56  57 SE5       29.96R

$$



WIZ038-039-048-051-240000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    65  54  67 E9        29.99S

APPLETON       PTSUNNY   70  57  64 SE10      29.98S

OSHKOSH        MOSUNNY   67  56  67 E10       29.97R

FOND DU LAC    CLOUDY    68  56  65 SE13      29.97R

$$



WIZ022-050-052-240000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      PTSUNNY   58  53  84 E7        30.01S

SHEBOYGAN      SUNNY     60  52  74 E6        30.00S

$$



LMZ563-521-522-541>543-240000-

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 2200   48      40/  6/  7 1016.6F

KEWAUNEE LKSHORE 2212           20/  8/  9 1016.2

NORTHPORT PIER   2200           30/  3/  8 1017.9

MENOMINEE LKSHOR 2212           30/ 10/ 11 1016.5

$$

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.