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.}

981
SXUS43 KGRB 130247
RECGRB
WIZ048-WIZ049-130400-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
946 PM CDT Tue May 12 2026

.TONIGHT...Northwest winds 15 to 20 knots. Mostly cloudy. Waves
1 foot or less building to 2 to 4 feet after midnight. Lows in
the mid 40s.
.WEDNESDAY...Northwest winds 10 to 20 knots. Partly sunny. Waves
2 to 4 feet subsiding to 1 to 3 feet in the afternoon. Highs in
the mid 50s.
.WEDNESDAY NIGHT...North winds up to 10 knots. Mostly clear.
Waves 1 foot or less. Lows in the lower 40s.
.THURSDAY...North winds up to 5 knots veering southeast in the
afternoon. Sunny. Waves less than 1 foot. Highs in the lower 60s.

$$

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

    
                        

896

ASUS43 KGRB 130159

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

900 PM CDT TUE MAY 12 2026



WIZ005-009-010>012-018-019-130300-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    37  35  92 N7        29.91R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLOUDY    44  38  79 NW15      29.84R

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    46  37  71 NW9G23    29.83R

PHILLIPS       CLOUDY    48  37  64 N8        29.85R

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-130300-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    46  41  82 NW17G29   29.75R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-130300-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         PTCLDY    52  40  63 NW8       29.81R

MOSINEE        CLOUDY    52  41  66 N12       29.81R

MARSHFIELD     CLOUDY    57  40  52 NW15G26   29.82R

WISC RAPIDS    CLOUDY    58  41  53 N10G20    29.81R

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        CLOUDY    60  42  51 N10       29.79R

$$



WIZ038-039-048-051-130300-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    55  46  71 NW16G25   29.75R

APPLETON       MOCLDY    59  45  58 NW20      29.76R

OSHKOSH        MOCLDY    58  42  55 NW17G30   29.76R

FOND DU LAC    CLOUDY    60  45  57 N17G30    29.76R

$$



WIZ022-050-052-130300-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      PTCLDY    56  48  74 NW12      29.73R

SHEBOYGAN      PTCLDY    58  48  69 NW20G31   29.72R

$$



LMZ563-521-522-541>543-130300-

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 0100   70     280/ 14/ 21 1003.7R

KEWAUNEE LKSHORE 0124          330/ 10/ 17 1005.3

NORTHPORT PIER   0100   44     280/ 11     1005.8

MENOMINEE LKSHOR 0124   50 52  310/ 12/ 14 1005.8

$$

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.