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.}

695
SXUS43 KGRB 031646
RECGRB
WIZ048-WIZ049-032100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
1146 AM CDT Mon Aug 3 2026

.THIS AFTERNOON...South winds up to 5 knots. Sunny. Waves less
than 1 foot. Highs around 80.
.TONIGHT...South winds 5 to 10 knots. Mostly clear. Waves 1 to
2 feet. Lows in the mid 60s.
.TUESDAY...Southwest winds 10 to 15 knots. Slight chance of
thunderstorms in the afternoon. Waves 1 to 3 feet. Highs around
80.
.TUESDAY NIGHT...West winds 5 to 10 knots. Showers likely and
chance of thunderstorms. Waves 1 foot or less. Lows in the mid
60s.

$$

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

    
                        

501

ASUS43 KGRB 031659

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

1200 PM CDT MON AUG 03 2026



WIZ005-009-010>012-018-019-031800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTSUNNY   80  61  52 SW10      29.95F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    MOSUNNY   77  62  58 SW8G16    29.99F

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    MOSUNNY   78  60  53 SW8       30.01S

PHILLIPS       MOSUNNY   78  62  58 SW12      29.99S

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        MOSUNNY   78  59  51 W9        30.00S

$$



WIZ013-073-031800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   77  59  53 VRB5      29.98S

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-031800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        SUNNY     75  62  63 S8        30.01S

WAUSAU         NOT AVBL

MOSINEE        MOSUNNY   79  63  57 S10       30.01R

MARSHFIELD     SUNNY     79  63  57 SW8       30.02R

WISC RAPIDS    SUNNY     79  62  56 S6        30.02S

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

$$



WIZ038-039-048-051-031800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  SUNNY     77  61  57 VRB5      30.00S

APPLETON       MOSUNNY   79  64  61 W6        30.02R

OSHKOSH        SUNNY     77  60  55 VRB6      30.01S

FOND DU LAC    SUNNY     76  59  55 CALM      30.01S

$$



WIZ022-050-052-031800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      SUNNY     75  64  68 SE7       30.02R

SHEBOYGAN      MOSUNNY   76  61  59 CALM      30.01S

$$



LMZ563-521-522-541>543-031800-

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 1600   67      30/  5/  5 1016.3F

KEWAUNEE LKSHORE 1624          140/  5/  7 1015.8

NORTHPORT PIER   1600          300/  9/ 10 1016.3

N MID LAKE BUOY  1640   65 67  240/  4/  6 1015.6R

MENOMINEE LKSHOR 1624   69 75  140/  8/  9 1015.9

$$

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.