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.}

934
SXUS43 KGRB 160621
RECGRB
WIZ048-WIZ049-160900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
121 AM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.REST OF THE NIGHT...Northeast winds around 5 knots. Areas of
dense fog. chance of rain and slight chance of thunderstorms.
Waves less than 1 foot. Near steady temperature in the lower 50s.
.THURSDAY...North winds around 5 knots. Patchy dense fog in the
morning. rain likely and slight chance of thunderstorms in the
morning. Waves less than 1 foot. Highs in the upper 50s.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Mostly clear.
Waves less than 1 foot. Lows in the mid 40s.
.FRIDAY...Southeast winds 10 to 15 knots. Chance of rain showers
in the afternoon. Waves 1 foot or less. Highs in the mid 60s.

$$

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

    
                        

991

ASUS43 KGRB 160810

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

300 AM CDT THU APR 16 2026



WIZ005-009-010>012-018-019-160900-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLEAR     30  30 100 CALM      29.77R

MANITOWISH WTR PTCLDY    33  33 100 CALM      29.75S

ARBOR VITAE    PTCLDY    37  36  98 CALM      29.74F

EAGLE RIVER    MOCLDY    37  37 100 CALM      29.75S

LAND O LAKES   MOCLDY    33  33 100 CALM      29.77S

RHINELANDER    MOCLDY    42  40  92 CALM      29.75R

PHILLIPS       PTCLDY    37  37 100 CALM      29.75S

ANTIGO         CLOUDY    52  52 100 CALM      29.74S FOG

TOMAHAWK       MOCLDY    40  38  95 MISG      29.75F

MERRILL        NOT AVBL

$$



WIZ013-073-160900-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  FOG       49  49 100 CALM      29.72S VSB 1/2

MARINETTE      FOG       45  45 100 E3        29.75R VSB 1/2

OCONTO         CLOUDY    46  46  99 CALM      29.74R VSB 1/4

$$



WIZ017-030-035>037-045-160900-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    47  46  97 CALM      29.74F

WAUSAU         CLOUDY    55  54  96 CALM      29.72F FOG

MOSINEE        FOG       54  54 100 N5        29.72S VSB 1/4

MARSHFIELD     FOG       54  54 100 CALM      29.72S VSB 1/4

WISC RAPIDS    CLOUDY    56  55  97 SE3       29.72F FOG

STEVENS POINT  FOG       57  57  99 CALM      29.73S VSB 1/2

WAUPACA        FOG       56  55  96 N3        29.75F VSB 1/4

SHAWANO        FOG       54  54 100 CALM      29.74S VSB 1/2

CLINTONVILLE   FOG       53  53  99 NE3       29.75R VSB 1/4

WAUTOMA        CLOUDY    54  54 100 N5        29.72F

$$



WIZ038-039-048-051-160900-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  FOG       48  48 100 N8        29.73S VSB 1/2

APPLETON       FOG       55  55 100 N3        29.72S VSB<1/4

OSHKOSH        FOG       53  53 100 N5        29.70F VSB 1

FOND DU LAC    CLOUDY    54  54 100 CALM      29.71S

$$



WIZ022-050-052-160900-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        FOG       41  40  97 CALM      29.73R VSB 1/2

WASHINGTON ISL FOG       40  38  95 N3        29.72S VSB 1/4

STURGEON BAY   FOG       43  43 100 N8        29.74R VSB 1/2

MANITOWOC      FOG       50  50 100 CALM      29.73R VSB 1/4

SHEBOYGAN      FOG       51  51 100 N3        29.71S VSB 1/4

$$



LMZ563-521-522-541>543-160900-

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 0800   46      10/  7/  8 1006.6R

KEWAUNEE LKSHORE 0730           50/  1/  3 1006.2R

NORTHPORT PIER   0700   40     300/  4/  4 1007.8

MENOMINEE LKSHOR 0730   43 42  330/  5/  6 1006.1S

$$

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.