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.}

407
SXUS43 KGRB 221106
RECGRB
WIZ048-WIZ049-222100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
606 AM CDT Thu Oct 22 2026

.TODAY...Northeast winds up to 5 knots. Sunny. Waves less than
1 foot. Highs in the upper 60s.
.TONIGHT...Southeast winds 5 to 10 knots. Partly cloudy. Waves
1 foot or less. Lows in the lower 50s.
.FRIDAY...Southeast winds around 5 knots. Partly sunny in the
morning then clearing. Waves 1 foot or less. Highs around 70.
.FRIDAY NIGHT...South winds around 10 knots. Partly cloudy. Waves
1 to 2 feet. Lows in the mid 50s.

$$

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

    
                        

538

ASUS43 KGRB 221110

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 AM CDT THU OCT 22 2026



WIZ005-009-010>012-018-019-221200-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLEAR     36  36 100 E3        30.26S

MANITOWISH WTR FOG       34  34  99 CALM      30.25S VSB 3/4

ARBOR VITAE    CLEAR     41  37  87 CALM      30.26R

EAGLE RIVER    CLEAR     33  33 100 CALM      30.27R

LAND O LAKES   CLEAR     31  31 100 CALM      30.29R

RHINELANDER    CLEAR     38  38 100 CALM      30.26R FOG

PHILLIPS       CLEAR     37  37  99 CALM      30.24S

ANTIGO         CLEAR     38  37  99 CALM      30.27R

TOMAHAWK       CLEAR     33  32  98 CALM      30.27R

MERRILL        CLEAR     33  33  99 CALM      30.26R

$$



WIZ013-073-221200-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTCLDY    35  34  96 CALM      30.26R

MARINETTE      MOCLDY    44  44 100 N5        30.28R

OCONTO         CLEAR     40  38  94 CALM      30.27R

$$



WIZ017-030-035>037-045-221200-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLEAR     40  40  99 E3        30.25R

WAUSAU         CLEAR     41  40  96 CALM      30.26R

MOSINEE        CLEAR     45  43  93 E5        30.25R

MARSHFIELD     CLEAR     45  44  97 CALM      30.25R

WISC RAPIDS    CLEAR     41  41 100 CALM      30.25R

STEVENS POINT  CLEAR     41  40  95 CALM      30.26R

WAUPACA        CLEAR     43  42  98 CALM      30.29R

SHAWANO        CLEAR     49  46  89 NE3       30.27R

CLINTONVILLE   CLEAR     43  42  97 N3        30.28R

WAUTOMA        CLEAR     40  39  97 CALM      30.25R

$$



WIZ038-039-048-051-221200-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  FOG       45  45 100 N8        30.26R VSB 1

APPLETON       CLEAR     52  48  87 N6        30.25R

OSHKOSH        CLEAR     45  44  97 CALM      30.24R

FOND DU LAC    CLEAR     41  41 100 CALM      30.25R FOG

$$



WIZ022-050-052-221200-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLEAR     50  49  97 N5        30.25R

WASHINGTON ISL CLOUDY    50  49  98 NE7       30.26R FOG

STURGEON BAY   CLEAR     49  49 100 NE5       30.26R FOG

MANITOWOC      CLEAR     44  42  93 W5        30.25R FOG

SHEBOYGAN      CLEAR     45  44  97 VRB7      30.24R

$$



LMZ563-521-522-541>543-221200-

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 1050   53     350/  8/ 10 1024.2R

KEWAUNEE LKSHORE 1024          300/  4/  5 1023.4

NORTHPORT PIER   1000   52     350/  5/  7 1025.1

N MID LAKE BUOY  1050   55 57   40/ 12/ 14 1024.4R         1/ 3

MENOMINEE LKSHOR 1024   50 56  350/  9/ 11 1024.4

$$

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.