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.}

753
SXUS43 KGRB 242126
RECGRB
WIZ048-WIZ049-250900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
426 PM CDT Mon Aug 24 2026

.REST OF THE AFTERNOON...West winds up to 5 knots. Sunny. Waves
1 foot or less. Near steady temperature in the lower 70s.
.TONIGHT...Southwest winds up to 5 knots. Mostly clear. Waves
1 foot or less. Lows in the lower 60s.
.TUESDAY...South winds 5 to 10 knots. Mostly sunny. Waves 1 foot
or less. Highs in the upper 70s.
.TUESDAY NIGHT...South winds 10 to 20 knots. Chance of
thunderstorms after midnight. Waves 1 to 3 feet building to 2 to
4 feet after midnight. Lows in the mid 60s.
.WEDNESDAY...West winds 10 to 15 knots. Mostly sunny. Waves 2 to
4 feet subsiding to 1 to 3 feet in the afternoon. Highs in the
upper 70s.

$$

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

    
                        

496

ASUS43 KGRB 242259

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 PM CDT MON AUG 24 2026



WIZ005-009-010>012-018-019-250000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOSUNNY   69  49  48 NE6       30.08F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    MOSUNNY   73  44  35 VRB5      30.09S

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-250000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   76  47  35 N7        30.04S

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-250000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         MOSUNNY   73  48  41 NW5       30.08R

MOSINEE        MOSUNNY   70  52  52 N3        30.08S

MARSHFIELD     MOSUNNY   71  51  49 CALM      30.08S

WISC RAPIDS    MOSUNNY   72  51  47 N3        30.08F

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        PTSUNNY   73  53  49 NW6       30.08R

$$



WIZ038-039-048-051-250000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOSUNNY   74  52  46 SW6       30.06R

APPLETON       MOSUNNY   75  50  41 VRB5      30.08S

OSHKOSH        MOSUNNY   72  53  51 E7        30.07S

FOND DU LAC    MOSUNNY   71  53  52 CALM      30.08S

$$



WIZ022-050-052-250000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      MOSUNNY   70  58  65 E8        30.07R

SHEBOYGAN      MOSUNNY   71  52  50 NW8       30.07S

$$



LMZ563-521-522-541>543-250000-

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 2240   69     160/  8/  9 1017.8F

KEWAUNEE LKSHORE 2218          140/  4/  7 1017.4

NORTHPORT PIER   2200                      1017.9

N MID LAKE BUOY  2240   69 69   10/  6/  8 1017.3R

MENOMINEE LKSHOR 2218      71  170/ 10/ 13 1016.8

$$

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.