Severe Thunderstorms and Flooding Threat in the Central U.S.; Rip Currents Along East Coast Beaches

Widespread thunderstorms will continue across the central and southern Plains today ahead of an approaching cold front. Heavy to excessive rainfall could lead to instances of flash flooding. Flood Watches have been issued. Swells from Hurricane Gabrielle are likely to cause life-threatening surf and rip current conditions along the U.S. East Coast over the next couple of days. Read More >

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.}

788
SXUS43 KGRB 231451
RECGRB
WIZ048-WIZ049-232100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
950 AM CDT Tue Sep 23 2025

.TODAY...Northeast winds 5 to 10 knots. Chance of sprinkles in
the afternoon. Waves less than 1 foot. Highs in the upper 60s.
.TONIGHT...Northeast winds 5 to 10 knots. Chance of sprinkles in
the evening. patchy fog after midnight. Waves 1 foot or less.
Lows around 60.
.WEDNESDAY...North winds around 10 knots. Patchy fog in the
morning. slight chance of rain showers through the day. Waves
1 foot or less. Highs in the mid 60s.
.WEDNESDAY NIGHT...North winds around 10 knots. Mostly cloudy.
Waves 1 foot or less. Lows in the upper 50s.

$$

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

    
                        

286

ASUS43 KGRB 231359

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

900 AM CDT TUE SEP 23 2025



WIZ005-009-010>012-018-019-231500-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    57  57 100 N3        30.05R FOG

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    57  57 100 CALM      30.03R

PHILLIPS       FOG       56  56 100 N3        30.03R VSB 1/2

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        CLOUDY    54  54 100 N3        30.02R

$$



WIZ013-073-231500-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    57  57 100 NW7       30.00S

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-231500-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        SUNNY     56  55  97 NE5       30.01S

WAUSAU         SUNNY     57  55  93 N3        30.01R

MOSINEE          N/A     59  55  88 N9        30.00R

MARSHFIELD     SUNNY     59  55  87 NE6       30.00R

WISC RAPIDS    SUNNY     64  57  78 NE6       30.00R

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        CLOUDY    62  60  93 NE8       29.99R

$$



WIZ038-039-048-051-231500-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    60  57  89 N7        29.99R

APPLETON       PTSUNNY   63  61  94 NE10      29.98R

OSHKOSH        CLOUDY    64  61  90 NE9       29.96R

FOND DU LAC    CLOUDY    63  61  93 E7        29.97R

$$



WIZ022-050-052-231500-

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    61  59  93 N7        29.98R

SHEBOYGAN      CLOUDY    62  61  96 NE13      29.96R

$$



LMZ563-521-522-541>543-231500-

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)

KEWAUNEE LKSHORE 1330   60      20/  7/ 12 1013.6R

NORTHPORT PIER   1300          320/ 15/ 17   N/A

N MID LAKE BUOY  1340   62 64  310/ 12/ 14 1014.2R

S GREEN BAY BUOY 1300   60 67   30/ 10/ 14  994.3          1/ 2

MENOMINEE LKSHOR 1330   58 68  340/ 10/ 11 1014.4R

$$

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.

GRB RSS Feed