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.}

155
SXUS43 KGRB 032230
RECGRB
WIZ048-WIZ049-040900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
530 PM CDT Thu Jul 3 2025

.REST OF THE AFTERNOON...East winds around 10 knots. Slight
chance of thunderstorms. Waves less than 1 foot. Near steady
temperature in the upper 70s.
.TONIGHT...Southeast winds 5 to 10 knots. Chance of thunderstorms
after midnight. Waves 1 foot or less. Lows in the upper 60s.
.FRIDAY...South winds 5 to 10 knots. Chance of thunderstorms.
Waves 1 foot or less. Highs in the lower 80s.
.FRIDAY NIGHT...South winds around 10 knots. Partly cloudy. Waves
1 foot or less. Lows in the mid 70s.
.SATURDAY...Southwest winds 10 to 15 knots. Chance of
thunderstorms in the afternoon. Waves 1 foot or less. Highs in
the mid 80s.

$$

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

    
                        

922

ASUS43 KGRB 032310

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 PM CDT THU JUL 03 2025



WIZ005-009-010>012-018-019-040000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOSUNNY   84  59  42 S5        29.96F

MANITOWISH WTR MOSUNNY   82  60  46 S5        30.00S

ARBOR VITAE    SUNNY     82  58  44 S7        30.00S

EAGLE RIVER    MOSUNNY   82  53  35 E5        30.00F

LAND O LAKES   MOSUNNY   82  49  32 CALM      30.02S

RHINELANDER    SUNNY     82  61  48 S5        30.01S

PHILLIPS       SUNNY     84  62  48 S7        29.97F

ANTIGO         SUNNY     80  64  58 SE7       30.02S

TOMAHAWK       SUNNY     84  57  40 MISG      30.00S

MERRILL        NOT AVBL

$$



WIZ013-073-040000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   80  55  42 SE5       29.99F

MARINETTE      MOSUNNY   76  52  43 S8        30.03S

OCONTO         SUNNY     76  50  40 E7        30.02S

$$



WIZ017-030-035>037-045-040000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        MOSUNNY   84  65  52 SE5       29.98S

WAUSAU         MOSUNNY   85  66  53 SE9       29.97F

MOSINEE        MOSUNNY   84  64  51 E3        29.98F

MARSHFIELD     MOSUNNY   86  69  56 S9        29.96F HX  90

WISC RAPIDS    PTSUNNY   86  67  52 CALM      29.97S

STEVENS POINT  PTSUNNY   86  68  55 E12       29.97F

WAUPACA        SUNNY     88  66  47 E8        29.98S HX  90

SHAWANO        SUNNY     82  60  46 E8        30.00F

CLINTONVILLE   SUNNY     82  64  56 E8        30.00F

WAUTOMA        PTSUNNY   86  68  54 SE7       29.96F

$$



WIZ038-039-048-051-040000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  SUNNY     78  60  53 E9        30.00S

APPLETON       MOSUNNY   84  68  58 E9        30.00R

OSHKOSH        SUNNY     81  70  69 E16       29.98S

FOND DU LAC    SUNNY     81  70  69 E10G21    29.97F

$$



WIZ022-050-052-040000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        SUNNY     73  45  36 SE5       30.03R

WASHINGTON ISL SUNNY     72  49  43 CALM      30.03R

STURGEON BAY   SUNNY     75  49  39 E8        30.04S

MANITOWOC      SUNNY     73  53  49 NE9       30.02S

SHEBOYGAN      SUNNY     73  61  65 E9        30.01S

$$



LMZ563-521-522-541>543-040000-

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 2300   66      10/  7/  8 1016.2S

KEWAUNEE LKSHORE 2224   67      20/  6/ 10 1015.4

NORTHPORT PIER   2200          120/  7/  9   N/A

N MID LAKE BUOY  2250   63     170/  4/  4 1016.6F         0

S GREEN BAY BUOY 2230   74 72   80/  8/ 10  995.9F         1/ 3

CHAMBERS ISLAND  2240   76      70/  4/  6   N/A

MENOMINEE LKSHOR 2224   73 74   90/  5/  5 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.