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.}

555
SXUS43 KGRB 060721
RECGRB
WIZ048-WIZ049-060900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
221 AM CDT Mon Apr 6 2026

.REST OF THE NIGHT...Northwest winds 5 to 10 knots. Mostly
cloudy. Waves 1 foot or less. Near steady temperature in the
upper 30s.
.MONDAY...Northwest winds 10 to 20 knots. Scattered sprinkles and
flurries in the morning, then scattered snow showers and isolated
rain showers in the afternoon. Waves 1 to 3 feet building to 2 to
4 feet in the afternoon. Near steady temperature in the upper
30s.
.MONDAY NIGHT...North winds 5 to 15 knots. Scattered snow showers
in the evening. Waves 1 to 3 feet. Lows around 20.
.TUESDAY...Northeast winds up to 10 knots veering south in the
afternoon. Sunny. Waves 1 foot or less. Highs in the upper 30s.

$$

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

    
                        

609

ASUS43 KGRB 060659

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 AM CDT MON APR 06 2026



WIZ005-009-010>012-018-019-060800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       FLURRIES  33  32  96 W12       30.10S

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLOUDY    33  32  96 NW6       30.09S

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    33  31  92 W6        30.08S

PHILLIPS       CLOUDY    33  32  96 NW3       30.11S

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL          N/A     35  31  86 NW5       30.10S

$$



WIZ013-073-060800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    34  33  96 W6        30.05R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-060800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    35  32  89 NW14G21   30.12S

WAUSAU         NOT AVBL

MOSINEE        NOT AVBL

MARSHFIELD     CLOUDY    38  33  82 NW16      30.13R

WISC RAPIDS    CLOUDY    37  34  89 NW5       30.13S

STEVENS POINT  NOT AVBL

WAUPACA        CLEAR     38  33  80 W5        30.15R

SHAWANO          N/A     38  32  78 W3        30.10F

CLINTONVILLE   NOT AVBL

WAUTOMA        PTCLDY    37  32  82 NW5       30.13R

$$



WIZ038-039-048-051-060800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    39  34  82 W7        30.09R

APPLETON       CLEAR     36  34  93 NW8       30.10S

OSHKOSH        PTCLDY    38  33  82 W10       30.10S

FOND DU LAC    MOCLDY    38  33  82 NW8       30.10S

$$



WIZ022-050-052-060800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      MOCLDY    40  34  79 W7        30.08S

SHEBOYGAN      CLEAR     39  34  82 W6        30.08S

$$



LMZ563-521-522-541>543-060800-

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 0600   44     280/  9/ 11 1018.9F

KEWAUNEE LKSHORE 0624   40     310/  2/  5 1017.8

NORTHPORT PIER   0600          120/  4/  5   N/A

MENOMINEE LKSHOR 0624   35 37  340/  5/  7 1017.9

$$

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.