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.}

184
SXUS43 KGRB 130246
RECGRB
WIZ048-WIZ049-130400-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
946 PM CDT Wed Aug 12 2026

.TONIGHT...Southeast winds around 5 knots. Mostly clear late in
the evening then becoming mostly cloudy. Waves less than 1 foot.
Lows in the upper 60s.
.THURSDAY...Southeast winds around 5 knots. Patchy fog in the
morning. chance of showers through the day. Waves 1 foot or less.
Highs in the upper 70s.
.THURSDAY NIGHT...East winds 5 to 10 knots. Slight chance of
showers in the evening. Waves 1 foot or less. Lows in the mid
60s.
.FRIDAY...East winds around 10 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.}

    
                        

552

ASUS43 KGRB 130459

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

1200 AM CDT THU AUG 13 2026



WIZ005-009-010>012-018-019-130600-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOCLDY    57  56  96 CALM      29.93R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    PTCLDY    58  56  93 CALM      29.94S

PHILLIPS       PTCLDY    60  56  85 CALM      29.94R

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        MOCLDY    61  56  84 CALM      29.92R

$$



WIZ013-073-130600-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTCLDY    59  55  87 N3        29.91R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-130600-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        MOCLDY    65  59  79 CALM      29.94R

WAUSAU         NOT AVBL

MOSINEE        NOT AVBL

MARSHFIELD     MOCLDY    69  61  75 N5        29.92R

WISC RAPIDS    MOCLDY    66  65  96 CALM      29.91R

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA          N/A    N/A N/A N/A MISG        N/A

$$



WIZ038-039-048-051-130600-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  PTCLDY    67  65  93 SW5       29.88R

APPLETON       PTCLDY    73  70  88 S8        29.90R

OSHKOSH        CLEAR     70  68  93 S7        29.89S

FOND DU LAC    CLEAR     70  69  97 S7        29.91R FOG

$$



WIZ022-050-052-130600-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      PTCLDY    70 N/A N/A S7        29.91R

SHEBOYGAN      CLEAR     67  67 100 SW5       29.91S FOG

$$



LMZ563-521-522-541>543-130600-

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 0400   71     210/  7/  8 1012.4R

KEWAUNEE LKSHORE 0424           CALM  /  1 1011.6

NORTHPORT PIER   0400          280/  2/  2 1012.5

N MID LAKE BUOY  0440   70 71  320/  6/  6 1011.4R

MENOMINEE LKSHOR 0424   73 72  100/  2/  2 1011.9

$$

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.