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.}

162
SXUS43 KGRB 191821
RECGRB
WIZ048-WIZ049-192100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
121 PM CDT Tue May 19 2026

.THIS AFTERNOON...West winds around 15 knots. Partly sunny. Waves
1 foot or less. Near steady temperature in the lower 60s.
.TONIGHT...Northwest winds 10 to 15 knots. Mostly cloudy. Waves
1 foot or less. Lows in the mid 40s.
.WEDNESDAY...North winds 5 to 10 knots. Sunny. Waves 1 foot or
less. Highs in the upper 50s.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Mostly cloudy. Waves
1 foot or less. Lows in the lower 40s.

$$

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

    
                        

011

ASUS43 KGRB 191859

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 PM CDT TUE MAY 19 2026



WIZ005-009-010>012-018-019-192000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    46  43  89 NW14      29.94R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLOUDY    51  44  75 W12G18    29.92R

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    53  43  68 W13G23    29.92R

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        CLOUDY    56  42  60 NW14G20   29.92R

$$



WIZ013-073-192000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTSUNNY   60  48  64 NW16G28   29.84R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-192000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    53  44  70 W9G23     29.94S

WAUSAU         NOT AVBL

MOSINEE        CLOUDY    54  45  71 NW18      29.94R

MARSHFIELD     CLOUDY    54  45  71 NW14G24   29.96R

WISC RAPIDS    CLOUDY    57  45  64 NW14G25   29.96R

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        CLOUDY    61  50  67 NW16G25   29.94R

$$



WIZ038-039-048-051-192000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    65  56  72 W21G33    29.85R

APPLETON       PTSUNNY   64  55  72 W20G28    29.89R

OSHKOSH        CLOUDY    62  54  74 W18G28    29.89R

FOND DU LAC    CLOUDY    63  56  78 W20G28    29.90R

$$



WIZ022-050-052-192000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      LGT RAIN  68  63  84 W12G23    29.85R

SHEBOYGAN      CLOUDY    66  61  84 W13G25    29.86R

$$



LMZ563-521-522-541>543-192000-

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 1800   61     180/ 15/ 17 1009.9R

KEWAUNEE LKSHORE 1818          230/ 10/ 15 1008.9

NORTHPORT PIER   1800          120/  7/ 11 1008.5

MENOMINEE LKSHOR 1818      58  230/ 14/ 19 1007.9

$$

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.