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.}

647
SXUS43 KGRB 131131
RECGRB
WIZ048-WIZ049-132100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
631 AM CDT Mon Jul 13 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 9 PM CDT
TUESDAY...

.TODAY...West winds 5 to 10 knots. Sunny. Waves 1 foot or less.
Highs in the lower 90s.
.TONIGHT...West winds 5 to 10 knots. Mostly clear. Waves 1 foot
or less. Lows in the lower 70s.
.TUESDAY...West winds 5 to 10 knots. Sunny. Waves 1 foot or less.
Highs in the mid 90s.
.TUESDAY NIGHT...West winds 5 to 10 knots. Mostly clear. Waves
1 foot or less. Lows in the lower 70s.

$$

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

    
                        

005

ASUS43 KGRB 131310

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

800 AM CDT MON JUL 13 2026



WIZ005-009-010>012-018-019-131400-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       SUNNY     79  71  76 W8        30.15S

MANITOWISH WTR MOSUNNY   75  73  95 W6        30.18S

ARBOR VITAE    SUNNY     74  71  88 W6        30.19S

EAGLE RIVER    SUNNY     76  71  84 W9G16     30.18S

LAND O LAKES   SUNNY     77  71  81 W6        30.19S

RHINELANDER    SUNNY     75  69  81 W8        30.20S

PHILLIPS       SUNNY     74  69  84 SW5       30.18F

ANTIGO         SUNNY     73  67  80 W8        30.20F

TOMAHAWK       SUNNY     75  69  80 CALM      30.21S

MERRILL        SUNNY     74  64  70 SW5       30.20S

$$



WIZ013-073-131400-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  SUNNY     77  72  84 W7G18     30.11F

MARINETTE      NOT AVBL

OCONTO         SUNNY     78  69  74 W10       30.15S

$$



WIZ017-030-035>037-045-131400-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        SUNNY     72  70  93 W6        30.22R

WAUSAU         SUNNY     74  67  78 SW6       30.21S

MOSINEE        SUNNY     75  68  78 W7        30.22R

MARSHFIELD     SUNNY     73  67  81 SW6       30.22R

WISC RAPIDS    SUNNY     74  67  78 SW6       30.22F

STEVENS POINT  SUNNY     77  68  72 W6        30.21F

WAUPACA        SUNNY     76  69  79 SW7       30.23S

SHAWANO        SUNNY     77  67  72 SW6       30.18S

CLINTONVILLE   SUNNY     76  68  78 W7        30.20S

WAUTOMA        SUNNY     75  68  78 W6        30.21F

$$



WIZ038-039-048-051-131400-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  SUNNY     77  69  76 W12       30.16S

APPLETON       SUNNY     75  72  88 W9        30.19F

OSHKOSH        SUNNY     77  68  73 W8        30.19F

FOND DU LAC    SUNNY     76  67  73 W6        30.21S

$$



WIZ022-050-052-131400-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        SUNNY     76  68  76 W8        30.13S

WASHINGTON ISL SUNNY     76  73  88 SW9       30.12S

STURGEON BAY   SUNNY     78  69  73 W9        30.15S

MANITOWOC      SUNNY     78  71  79 W7        30.17S

SHEBOYGAN      NOT AVBL

$$



LMZ563-521-522-541>543-131400-

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 1300   75     200/  5/  5 1021.8R

KEWAUNEE LKSHORE 1224          280/  8/ 12 1020.6

NORTHPORT PIER   1200          220/  3/  9 1020.3

N MID LAKE BUOY  1250   72 69  240/ 12/ 14 1019.1R         2/ 4

MENOMINEE LKSHOR 1224   77 76  240/  8/ 12 1020.1

$$

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.