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.}

317
SXUS43 KGRB 041951
RECGRB
WIZ048-WIZ049-050900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
251 PM CDT Fri Sep 4 2026

.REST OF THE AFTERNOON...Northeast winds around 5 knots. Mostly
cloudy. Waves 1 foot or less. Near steady temperature in the
upper 70s.
.TONIGHT...Northeast winds 5 to 10 knots. Slight chance of
thunderstorms through the night. patchy fog after midnight. Waves
less than 1 foot. Lows in the upper 60s.
.SATURDAY...Northeast winds 5 to 10 knots. Patchy fog in the
morning. Waves 1 foot or less. Highs in the upper 70s.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Mostly clear.
Waves 1 foot or less. Lows in the lower 60s.
.SUNDAY...East winds around 5 knots. Mostly sunny. Waves 1 foot
or less. Highs in the upper 70s.

$$

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

    
                        

289

ASUS43 KGRB 042159

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

500 PM CDT FRI SEP 04 2026



WIZ005-009-010>012-018-019-042300-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    69  68  96 CALM      29.98S

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    70  69  97 E8        29.97R

PHILLIPS       CLOUDY    79  71  75 NE7       29.93S

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-042300-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    65  64  97 E5        29.97R FOG

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-042300-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         PTSUNNY   81  73  78 E10       29.90R

MOSINEE        MOSUNNY   84  75  74 SE6       29.89F HX  92

MARSHFIELD     MOSUNNY   87  75  67 SW10      29.88F HX  96

WISC RAPIDS    MOSUNNY   85  74  69 SW7       29.90S HX  92

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        PTSUNNY   80  73  79 SW5       29.90S

$$



WIZ038-039-048-051-042300-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    75  70  84 NE13      29.91R

APPLETON       PTSUNNY   84  75  74 SW5       29.91R HX  92

OSHKOSH        PTSUNNY   81  72  74 CALM      29.90R

FOND DU LAC    PTSUNNY   80  72  76 SW3       29.91R

$$



WIZ022-050-052-042300-

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    73  69  87 SE7       29.93R

SHEBOYGAN      MOSUNNY   76  70  82 E6        29.92R

$$



LMZ563-521-522-541>543-042300-

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 2140   70     170/  3/  4 1012.9R

KEWAUNEE LKSHORE 2118           60/  4/  5 1013.1

NORTHPORT PIER   2100           40/  8/  8 1014.6

N MID LAKE BUOY  2140   70 70   80/ 12/ 14 1013.5F

CHAMBERS ISLAND  2140   74                   N/A

MENOMINEE LKSHOR 2118      74   20/ 11/ 12 1013.3

$$

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.