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.}

596
SXUS43 KGRB 130707
RECGRB
WIZ048-WIZ049-130900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
206 AM CDT Mon Apr 13 2026

...FLOOD WATCH IN EFFECT FROM THIS AFTERNOON THROUGH TUESDAY
MORNING...

.REST OF THE NIGHT...Southwest winds 10 to 15 knots. Mostly
cloudy. Waves 1 foot or less. Near steady temperature in the
upper 50s.
.MONDAY...West winds 5 to 10 knots backing south in the
afternoon. Slight chance of thunderstorms in the afternoon. Waves
1 foot or less. Highs in the upper 60s.
.MONDAY NIGHT...South winds around 10 knots. Rain showers and
chance of thunderstorms through the night. patchy fog after
midnight. Waves 1 foot or less. Lows in the mid 50s.
.TUESDAY...Southwest winds 5 to 10 knots. Patchy fog in the
morning. chance of rain showers in the afternoon. Waves 1 foot or
less. Highs in the upper 60s.

$$

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

    
                        

575

ASUS43 KGRB 130759

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

300 AM CDT MON APR 13 2026



WIZ005-009-010>012-018-019-130900-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    53  52  96 W5        29.66R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    LGT RAIN  60  56  86 NW6       29.64R

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-130900-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  LGT RAIN  61  58  90 W9G21     29.56S

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-130900-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         NOT AVBL

MOSINEE        NOT AVBL

MARSHFIELD     CLOUDY    62  58  86 W8        29.67R

WISC RAPIDS    CLOUDY    63  58  83 SW9       29.67R

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        CLOUDY    62  58  86 SW8       29.69R

$$



WIZ038-039-048-051-130900-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOCLDY    59  57  93 SW6       29.65S

APPLETON       NOT AVBL

OSHKOSH        CLOUDY    61  58  90 SW10G22   29.67S

FOND DU LAC    CLOUDY    60  58  92 SW13      29.69S

$$



WIZ022-050-052-130900-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      MOCLDY    61  59  93 SW13      29.67S

SHEBOYGAN      CLOUDY    61  57  87 SW15      29.68F

$$



LMZ563-521-522-541>543-130900-

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 0700   61     230/ 12/ 13 1005.5R

KEWAUNEE LKSHORE 0730          230/  8/ 15 1003.5F

NORTHPORT PIER   0700          160/  6/ 13 1003.0

MENOMINEE LKSHOR 0730   57 39  200/  7/ 10 1001.8S

$$

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.