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.}

770
SXUS43 KGRB 311812
RECGRB
WIZ048-WIZ049-312100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
111 PM CDT Sat Oct 31 2026

.THIS AFTERNOON...South winds 5 to 10 knots. Chance of sprinkles.
Waves 1 foot or less. Near steady temperature in the upper 50s.
.TONIGHT...South winds 5 to 10 knots. Slight chance of rain
showers in the evening. Waves 1 foot or less. Lows around 50.
.SUNDAY...South winds up to 5 knots. Mostly sunny. Waves 1 foot
or less. Highs in the mid 60s.
.SUNDAY NIGHT...South winds 5 to 10 knots. Partly cloudy in the
evening then becoming mostly cloudy. Waves 1 foot or less. Lows
in the lower 50s.

$$

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

    
                        

106

ASUS43 KGRB 311810

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

100 PM CDT SAT OCT 31 2026



WIZ005-009-010>012-018-019-311900-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    52  35  52 CALM      30.32F

MANITOWISH WTR CLOUDY    53  37  54 SE5       30.33S

ARBOR VITAE    CLOUDY    50  37  62 SE5       30.32F

EAGLE RIVER    LGT RAIN  51  36  56 CALM      30.33F

LAND O LAKES   CLOUDY    54  32  43 S5        30.35F

RHINELANDER    CLOUDY    52  42  69 CALM      30.34F

PHILLIPS       CLOUDY    50  42  74 SE6       30.32S

ANTIGO         DRIZZLE   51  45  81 S7        30.35F

TOMAHAWK       CLOUDY    52  43  72 CALM      30.34R

MERRILL        DRIZZLE   49  45  85 CALM      30.33S

$$



WIZ013-073-311900-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   56  33  42 SE8       30.34F

MARINETTE      MOSUNNY   58  48  69 S9        30.37F

OCONTO         MOSUNNY   59  44  57 S6        30.37F

$$



WIZ017-030-035>037-045-311900-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    48  47  96 SE3       30.32F

WAUSAU         LGT RAIN  50  48  93 E3        30.33F FOG

MOSINEE        NOT AVBL

MARSHFIELD     RAIN      50  48  93 SE7       30.32F FOG

WISC RAPIDS    CLOUDY    55  48  77 S7        30.34S

STEVENS POINT  CLOUDY    55  48  77 SE3       30.34F

WAUPACA        CLOUDY    57  48  73 SE8       30.37F

SHAWANO        CLOUDY    60  48  64 S5        30.36S

CLINTONVILLE   CLOUDY    57  49  73 SE8       30.36F

WAUTOMA        CLOUDY    59  49  69 S9        30.34F

$$



WIZ038-039-048-051-311900-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    61  48  62 S10       30.35F

APPLETON       CLOUDY    61  50  67 S14       30.36F

OSHKOSH        CLOUDY    58  49  72 S9        30.34F

FOND DU LAC    CLOUDY    60  48  64 S10       30.35F

$$



WIZ022-050-052-311900-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        MOSUNNY   58  46  63 S9        30.37F

WASHINGTON ISL CLOUDY    56  49  77 S9        30.39S

STURGEON BAY   PTSUNNY   57  47  69 S14       30.37F

MANITOWOC      MOSUNNY   59  50  72 S14       30.37F

SHEBOYGAN      CLOUDY    59  49  69 S9        30.35F

$$



LMZ563-521-522-541>543-311900-

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 1750   56     170/ 14/ 15 1028.2F

KEWAUNEE LKSHORE 1724          150/  7/  9 1028.3

N MID LAKE BUOY  1750   54 55  190/ 10/ 12 1029.1F         1/ 3

MENOMINEE LKSHOR 1724   54 55  150/  5/  6 1028.3

$$

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.