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.}

198
SXUS43 KGRB 042131
RECGRB
WIZ048-WIZ049-050900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
431 PM CDT Sat Jul 4 2026

.REST OF THE AFTERNOON...Northeast winds 5 to 10 knots. Slight
chance of thunderstorms. Waves less than 1 foot. Near steady
temperature in the upper 70s.
.TONIGHT...Northeast winds 5 to 10 knots. Slight chance of
thunderstorms in the evening. Waves 1 foot or less. Lows in the
lower 60s.
.SUNDAY...Northeast winds 5 to 10 knots. Partly sunny. Waves
1 foot or less. Highs in the upper 70s.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Mostly clear.
Waves 1 foot or less. Lows in the lower 60s.
.MONDAY...East winds around 5 knots. Sunny. Waves less than
1 foot. Highs around 80.

$$

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

    
                        

918

ASUS43 KGRB 042101

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

400 PM CDT SAT JUL 04 2026



WIZ005-009-010>012-018-019-042200-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       SUNNY     73  56  54 N12       30.08F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    PTSUNNY   81  60  48 VRB5      30.04F

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-042200-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   80  63  55 NE12      30.01F

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-042200-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         MOSUNNY   83  61  47 N10       30.01F

MOSINEE        MOSUNNY   81  66  61 E8        30.01S

MARSHFIELD     MOSUNNY   81  66  60 E8        30.01S

WISC RAPIDS    MOSUNNY   82  66  58 VRB5      30.00S

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        CLOUDY    78  67  68 E8        30.00R

$$



WIZ038-039-048-051-042200-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOSUNNY   80  61  52 NE10      29.98F

APPLETON       SUNNY     82  57  42 NE13G18   30.00F

OSHKOSH        PTSUNNY   78  66  66 NE12      29.98S

FOND DU LAC    CLOUDY    78  69  73 NE7G18    29.98F

$$



WIZ022-050-052-042200-

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   76  62  62 NE9       29.99F

SHEBOYGAN      PTSUNNY   72  64  76 E9        29.99F

$$



LMZ563-521-522-541>543-042200-

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   63     360/ 10/ 10 1015.7F

KEWAUNEE LKSHORE 2024           30/  4/  6 1015.6

NORTHPORT PIER   2000           50/  6     1016.6

N MID LAKE BUOY  2040   67 66   30/  6/  8 1015.2F

MENOMINEE LKSHOR 2024   70 73   20/  8/  9 1015.7

$$

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.