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.}

313
SXUS43 KGRB 310001
RECGRB
WIZ048-WIZ049-310115-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
701 PM CDT Sun Aug 30 2026

.TONIGHT...Southeast winds 5 to 10 knots. Slight chance of
thunderstorms after midnight. Waves 1 foot or less. Lows in the
lower 70s.
.MONDAY...Southwest winds 10 to 15 knots. Slight chance of
thunderstorms in the morning. Waves 1 foot or less. Highs in the
mid 80s.
.MONDAY NIGHT...West winds 5 to 10 knots. Partly cloudy. Waves
1 foot or less. Lows in the lower 70s.
.TUESDAY...Southwest winds 5 to 10 knots. Mostly sunny. Waves
less than 1 foot. Highs in the mid 80s.

$$

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

    
                        

428

ASUS43 KGRB 302359

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

700 PM CDT SUN AUG 30 2026



WIZ005-009-010>012-018-019-310100-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    71  65  81 E6        29.92F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    68  66  93 E7        29.95R FOG

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-310100-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  LGT RAIN  68  67  96 CALM      29.94R FOG

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-310100-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         MOCLDY    74  68  81 E9        29.91S

MOSINEE        MOCLDY    75  70  83 E8        29.90S

MARSHFIELD     PTCLDY    77  69  76 SE8       29.89R

WISC RAPIDS    PTCLDY    80  68  66 S5        29.89S

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        PTCLDY    78  70  76 S7        29.91R

$$



WIZ038-039-048-051-310100-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOCLDY    73  68  84 NE10      29.91R

APPLETON       PTCLDY    81  70  69 SW6       29.90S

OSHKOSH        MOCLDY    77  68  73 SW7       29.90R

FOND DU LAC    CLOUDY    76  68  76 S10       29.91S

$$



WIZ022-050-052-310100-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      MOCLDY    73  32  22 E3        29.91R

SHEBOYGAN      CLOUDY    78  67  68 SW10      29.91R

$$



LMZ563-521-522-541>543-310100-

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 2340   80     220/ 13/ 16 1012.1R

KEWAUNEE LKSHORE 2306           30/  5/  7 1012.3

NORTHPORT PIER   2300           90/  7/  9 1013.9

N MID LAKE BUOY  2340   69 69  100/ 10/ 14 1013.2F

CHAMBERS ISLAND  2340   71      20/  7/  9   N/A

MENOMINEE LKSHOR 2312      69   20/ 10/ 11 1012.6

$$

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.