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.}

428
SXUS43 KGRB 031056
RECGRB
WIZ048-WIZ049-032100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
556 AM CDT Sun May 3 2026

.TODAY...Southwest winds 10 to 20 knots. Chance of rain showers
in the morning. Chance of sprinkles in the afternoon. Waves 1 to
3 feet. Highs in the lower 60s.
.TONIGHT...Southwest winds 5 to 10 knots. Chance of sprinkles in
the evening. Waves 1 foot or less. Lows in the mid 40s.
.MONDAY...Southwest winds 10 to 20 knots. Chance of thunderstorms
in the afternoon. Waves 1 to 3 feet. Highs in the upper 60s.
.MONDAY NIGHT...Northwest winds 10 to 15 knots. Chance of rain
showers in the evening. Waves 1 foot or less. Lows in the lower
40s.

$$

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

    
                        

849

ASUS43 KGRB 031110

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 AM CDT SUN MAY 03 2026



WIZ005-009-010>012-018-019-031200-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    49  40  71 CALM      29.67F

MANITOWISH WTR CLOUDY    44  39  81 CALM      29.69S

ARBOR VITAE    CLOUDY    44  40  86 CALM      29.69S

EAGLE RIVER    CLOUDY    45  37  75 CALM      29.69F

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    47  37  68 SW5       29.71F

PHILLIPS       PTCLDY    45  36  71 S6        29.69F

ANTIGO         CLOUDY    43  37  81 S8        29.73F

TOMAHAWK       CLOUDY    47  36  64 CALM      29.71F

MERRILL        NOT AVBL

$$



WIZ013-073-031200-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    41  38  89 CALM      29.68F

MARINETTE      LGT RAIN  46  38  73 SW5       29.75S

OCONTO         CLOUDY    48  36  63 SW5       29.75F

$$



WIZ017-030-035>037-045-031200-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    46  34  64 S8        29.73S

WAUSAU         MOCLDY    45  37  73 E3        29.73F

MOSINEE        CLOUDY    46  34  61 S8        29.74S

MARSHFIELD     MOCLDY    46  31  55 SW6       29.74S

WISC RAPIDS    CLOUDY    51  30  44 SW10      29.75F

STEVENS POINT  MOCLDY    50  32  50 S7        29.76S

WAUPACA        CLOUDY    50  32  50 S5        29.80F

SHAWANO        NOT AVBL

CLINTONVILLE   CLOUDY    47  35  63 S6        29.78F

WAUTOMA        MOCLDY    51  31  46 SW10      29.78F

$$



WIZ038-039-048-051-031200-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    49  34  56 SW6       29.77F

APPLETON       CLOUDY    52  34  50 SW7       29.79F

OSHKOSH        CLOUDY    49  32  52 S12       29.79F

FOND DU LAC    CLOUDY    48  31  51 S13       29.81F

$$



WIZ022-050-052-031200-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    48  32  53 SW9G18    29.73F

WASHINGTON ISL DRIZZLE   47  35  62 SW8       29.73S

STURGEON BAY   CLOUDY    51  34  52 W12       29.76F

MANITOWOC      LGT RAIN  51  33  50 W10       29.81R

SHEBOYGAN      CLOUDY    50  31  48 SW12      29.81F

$$



LMZ563-521-522-541>543-031200-

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 1100   52     240/ 13/ 17 1009.5F

KEWAUNEE LKSHORE 1024          250/  8/ 11 1007.8

NORTHPORT PIER   1000          170/  4/  6 1008.1

MENOMINEE LKSHOR 1024   49 50  220/ 10/ 13 1006.5

$$

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.