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.}

798
SXUS43 KGRB 070901
RECGRB
WIZ048-WIZ049-072100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
401 AM CDT Tue Jul 7 2026

.EARLY THIS MORNING...Southwest winds up to 5 knots. Mostly
clear. Waves less than 1 foot. Near steady temperature in the
lower 60s.
.TODAY...South winds up to 5 knots. Sunny. Waves less than
1 foot. Highs in the mid 80s.
.TONIGHT...Southwest winds 5 to 10 knots. Partly cloudy. Waves
less than 1 foot. Lows in the mid 60s.
.WEDNESDAY...Southwest winds 5 to 10 knots. Chance of
thunderstorms in the afternoon. Waves 1 foot or less. Highs in
the mid 80s.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots. Chance of
thunderstorms in the evening. Showers through the night. Waves
1 foot or less. Lows in the mid 60s.

$$

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

    
                        

949

ASUS43 KGRB 070910

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

400 AM CDT TUE JUL 07 2026



WIZ005-009-010>012-018-019-071000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    69  60  73 SW7       30.01F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLOUDY    64  61  91 S6        30.07F

EAGLE RIVER    CLOUDY    65  64  96 S3        30.07F

LAND O LAKES   CLOUDY    64  63  98 S3        30.08F

RHINELANDER    CLOUDY    65  61  87 SW5       30.09F

PHILLIPS       MOCLDY    67  62  86 SE5       30.04F

ANTIGO         MOCLDY    61  57  85 SW7       30.10F

TOMAHAWK       NOT AVBL

MERRILL        MOCLDY    59  57  93 CALM      30.08F FOG

$$



WIZ013-073-071000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTCLDY    61  55  81 CALM      30.04F

MARINETTE      PTCLDY    58  58 100 CALM      30.06F

OCONTO         PTCLDY    55  55  99 CALM      30.07F

$$



WIZ017-030-035>037-045-071000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        MOCLDY    65  64  97 S5        30.08F

WAUSAU         PTCLDY    65  61  87 S5        30.09F

MOSINEE        PTCLDY    61  59  94 S3        30.09F

MARSHFIELD     MOCLDY    62  60  93 S7        30.09F

WISC RAPIDS    MOCLDY    60  59  96 CALM      30.10F

STEVENS POINT  MOCLDY    62  60  93 CALM      30.11S

WAUPACA        MOCLDY    62  60  92 CALM      30.13S

SHAWANO        PTCLDY    63  59  88 CALM      30.09S

CLINTONVILLE   PTCLDY    60  58  92 W3        30.10S

WAUTOMA        PTCLDY    60  58  92 CALM      30.11S

$$



WIZ038-039-048-051-071000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  PTCLDY    60  59  96 W3        30.07F

APPLETON       PTCLDY    66  59  77 W3        30.09S

OSHKOSH        PTCLDY    64  54  69 SW3       30.08F

FOND DU LAC    PTCLDY    55  54  96 S5        30.10S

$$



WIZ022-050-052-071000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        PTCLDY    59  48  66 CALM      30.06F

WASHINGTON ISL PTCLDY    55  51  88 CALM      30.05S

STURGEON BAY   CLEAR     60  52  74 SW3       30.08F

MANITOWOC      CLEAR     58  54  86 NW3       30.09S

SHEBOYGAN      CLEAR     53  52  96 W6        30.09S

$$



LMZ563-521-522-541>543-071000-

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 0900   65     290/  6/  7 1018.6S

KEWAUNEE LKSHORE 0824          300/  5/  6 1017.8

NORTHPORT PIER   0800          190/  2/  4 1018.6

N MID LAKE BUOY  0850   69 68  260/  4/  4 1017.3F         0

MENOMINEE LKSHOR 0824   66 75  230/  4/  4 1017.8

$$

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.