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.}

509
SXUS43 KGRB 182047
RECGRB
WIZ048-WIZ049-190900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
347 PM CDT Sat Apr 18 2026

.REST OF THE AFTERNOON...West winds around 20 knots. Partly
sunny. Waves less than 1 foot. Near steady temperature in the
lower 40s.
.TONIGHT...West winds 10 to 20 knots. Partly cloudy. Waves less
than 1 foot. Lows in the mid 30s.
.SUNDAY...Northwest winds 10 to 15 knots. Slight chance of snow
showers in the morning. Waves less than 1 foot. Highs in the
lower 40s.
.SUNDAY NIGHT...North winds 5 to 10 knots veering east after
midnight. Mostly clear. Waves less than 1 foot. Lows in the upper
20s.
.MONDAY...South winds 5 to 10 knots. Sunny. Waves less than
1 foot. Highs in the upper 40s.

$$

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

    
                        

131

ASUS43 KGRB 182059

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

400 PM CDT SAT APR 18 2026



WIZ005-009-010>012-018-019-182200-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTSUNNY   34  16  47 W14G31    29.80R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    PTSUNNY   35  15  43 W16G24    29.78R

EAGLE RIVER    CLOUDY    36  11  35 W13G24    29.76R

LAND O LAKES   CLOUDY    36  12  37 W12G22    29.77R

RHINELANDER    CLOUDY    37  15  40 W20G32    29.79R

PHILLIPS       CLOUDY    35  15  44 W10G22    29.82R

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-182200-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   40  18  41 W14G26    29.72R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-182200-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    36  19  49 W16G26    29.85S

WAUSAU         NOT AVBL

MOSINEE        CLOUDY    37  21  52 W16G29    29.86R

MARSHFIELD     CLOUDY    36  20  52 W22G35    29.88R

WISC RAPIDS    CLOUDY    39  18  42 W15G33    29.90R

STEVENS POINT  NOT AVBL

WAUPACA        CLOUDY    42  19  39 W20G28    29.90S

SHAWANO        CLOUDY    41  20  42 W15G30    29.84R

CLINTONVILLE   NOT AVBL

WAUTOMA        CLOUDY    40  22  48 W18G30    29.89R

$$



WIZ038-039-048-051-182200-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  PTSUNNY   42  26  53 W21G33    29.84R

APPLETON       CLOUDY    43  25  49 W25G32    29.85R

OSHKOSH        PTSUNNY   41  24  51 NW20G30   29.86R

FOND DU LAC    PTSUNNY   43  25  49 W20G31    29.87R

$$



WIZ022-050-052-182200-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      CLOUDY    42  25  50 W21G29    29.83F

SHEBOYGAN      CLOUDY    43  28  55 W21G28    29.85R

$$



LMZ563-521-522-541>543-182200-

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 2000   42     270/ 19/ 23 1010.5R

KEWAUNEE LKSHORE 2006          260/ 11/ 20 1009.2

NORTHPORT PIER   2000   43     260/  8/ 16 1008.5

MENOMINEE LKSHOR 2012      43  230/ 13/ 16 1007.2

$$

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.