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.}

446
SXUS43 KGRB 251412
RECGRB
WIZ048-WIZ049-252100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
912 AM CDT Thu Jun 25 2026

.TODAY...North winds 5 to 10 knots. Slight chance of rain showers
late in the morning, then chance of rain showers and slight
chance of thunderstorms in the afternoon. Waves 1 foot or less.
Highs in the lower 70s.
.TONIGHT...East winds up to 5 knots. Slight chance of
thunderstorms in the evening. Waves less than 1 foot. Lows in the
mid 50s.
.FRIDAY...East winds 5 to 10 knots. Partly sunny. Waves 1 foot or
less. Highs in the lower 70s.
.FRIDAY NIGHT...East winds 5 to 10 knots. Partly 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.}

    
                        

736

ASUS43 KGRB 251410

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

900 AM CDT THU JUN 25 2026



WIZ005-009-010>012-018-019-251500-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    53  53 100 N5        30.00R

MANITOWISH WTR CLOUDY    60  59  97 NE6       29.98S

ARBOR VITAE    PTSUNNY   60  55  86 N3        29.98R

EAGLE RIVER    CLOUDY    58  57  94 N6        29.97R

LAND O LAKES   CLOUDY    59  57  92 NE3       30.00R

RHINELANDER    PTSUNNY   60  55  83 VRB3      29.97S

PHILLIPS       CLOUDY    55  55 100 N5        29.98R

ANTIGO         CLOUDY    60  56  87 NE7       29.96R

TOMAHAWK       PTSUNNY   62  59  93 N3        29.97S

MERRILL        CLOUDY    61  58  90 N5        29.95R

$$



WIZ013-073-251500-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    60  59  96 NE5       29.94R

MARINETTE      CLOUDY    61  61 100 VRB6      29.94R

OCONTO         CLOUDY    61  61  99 NE6       29.93R

$$



WIZ017-030-035>037-045-251500-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    56  55  97 N3        29.97R

WAUSAU         PTSUNNY   62  57  83 N6        29.95R

MOSINEE        NOT AVBL

MARSHFIELD     CLOUDY    62  58  86 NW8       29.95S

WISC RAPIDS    PTSUNNY   63  58  83 N6        29.94S

STEVENS POINT  CLOUDY    64  60  87 CALM      29.95R

WAUPACA        CLOUDY    65  60  82 N6        29.96S

SHAWANO        CLOUDY    63  58  84 N6        29.94R

CLINTONVILLE   CLOUDY    62  59  90 NE5       29.95R

WAUTOMA        CLOUDY    63  59  87 CALM      29.94R

$$



WIZ038-039-048-051-251500-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    61  59  93 N7        29.92R FOG

APPLETON       PTSUNNY   64  61  88 VRB5      29.93R

OSHKOSH        PTSUNNY   64  58  80 W7        29.92R

FOND DU LAC    PTSUNNY   66  60  81 NW7       29.93S

$$



WIZ022-050-052-251500-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    60  57  89 NE6       29.92S

WASHINGTON ISL CLOUDY    60  57  88 NE9       29.92S

STURGEON BAY   CLOUDY    61  57  87 NE7       29.93S

MANITOWOC      CLOUDY    62  61  96 N10       29.92R

SHEBOYGAN      MOSUNNY   66  60  81 W5        29.91R

$$



LMZ563-521-522-541>543-251500-

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 1400   65     320/  7/  9 1012.7R

KEWAUNEE LKSHORE 1324           30/  4/  5 1012.3R

NORTHPORT PIER   1300           20/  6/ 10 1013.9

N MID LAKE BUOY  1350   57 56   30/ 12/ 14 1012.8R         2/ 5

MENOMINEE LKSHOR 1324   61 70   20/ 12/ 12 1013.2

$$

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.