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.}

807
SXUS43 KGRB 192252
RECGRB
WIZ048-WIZ049-200900-

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

.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.
.THURSDAY...East winds around 10 knots. Partly sunny. Waves
1 foot or less. Highs in the mid 50s.

$$

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

    
                        

417

ASUS43 KGRB 192310

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 PM CDT TUE MAY 19 2026



WIZ005-009-010>012-018-019-200000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    49  39  68 W10       30.01R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLOUDY    47  44  86 NW7       30.00R

EAGLE RIVER    CLOUDY    49  41  73 W10G21    29.99R

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    51  42  71 W9G22     30.00R

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       CLOUDY    53  42  66 W12G18    30.02R

MERRILL        CLOUDY    54  39  58 W12G20    30.00R

$$



WIZ013-073-200000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    57  44  62 NW16      29.92R

MARINETTE      CLOUDY    64  46  52 NW8       29.93R

$$



WIZ017-030-035>037-045-200000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    50  42  72 W12G20    30.03R

WAUSAU         CLOUDY    55  44  66 W16       30.01R

MOSINEE        NOT AVBL

MARSHFIELD     CLOUDY    51  42  71 W13G25    30.05R

WISC RAPIDS    PTSUNNY   56  44  64 NW20G26   30.03R

STEVENS POINT  CLOUDY    57  46  66 W8G17     30.03R

WAUPACA        NOT AVBL

SHAWANO          N/A     61  43  50 W15       29.98R

CLINTONVILLE   CLOUDY    60  46  60 W16       30.00R

WAUTOMA        CLOUDY    59  47  64 W17G25    30.02R

$$



WIZ038-039-048-051-200000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOSUNNY   61  47  59 W16G26    29.97R

APPLETON       CLOUDY    61  48  63 W17G23    30.00R

OSHKOSH        CLOUDY    60  48  64 NW12      29.99R

FOND DU LAC    CLOUDY    61  47  59 NW12G22   30.00R

$$



WIZ022-050-052-200000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        MOSUNNY   54  47  75 SE6       29.91R

WASHINGTON ISL PTSUNNY   52  47  82 CALM      29.91R

STURGEON BAY   MOSUNNY   63  48  58 NW15      29.93R

MANITOWOC      MOSUNNY   62  50  64 W17G26    29.95R

SHEBOYGAN      PTSUNNY   62  49  62 NW18G29   29.97R

$$



LMZ563-521-522-541>543-200000-

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 2300   62     280/ 21/ 26 1014.4R

KEWAUNEE LKSHORE 2224          290/ 16/ 25 1012.8

NORTHPORT PIER   2200           60/  8/ 12 1013.2

MENOMINEE LKSHOR 2224   65 58  290/ 12/ 18 1012.5

$$

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.