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.}

243
SXUS43 KGRB 190621
RECGRB
WIZ048-WIZ049-190900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
121 AM CDT Mon Oct 19 2026

.REST OF THE NIGHT...Southwest winds 5 to 10 knots. Clear. Waves
1 to 3 feet. Lows in the upper 40s.
.MONDAY...Southwest winds 5 to 10 knots backing southeast in the
afternoon. Sunny. Waves 1 foot or less. Highs in the mid 60s.
.MONDAY NIGHT...East winds up to 5 knots. Partly cloudy. Waves
less than 1 foot. Lows in the upper 40s.
.TUESDAY...Southeast winds up to 5 knots. Mostly sunny. Waves
less than 1 foot. Highs in the mid 60s.

$$

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

    
                        

164

ASUS43 KGRB 190710

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 AM CDT MON OCT 19 2026



WIZ005-009-010>012-018-019-190800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTCLDY    37  33  85 SW3       30.25R

MANITOWISH WTR CLEAR     36  34  92 CALM      30.25R

ARBOR VITAE    CLEAR     41  34  75 CALM      30.25R

EAGLE RIVER    CLEAR     41  32  71 CALM      30.25R

LAND O LAKES   CLEAR     33  31  90 CALM      30.26S

RHINELANDER    CLEAR     46  35  65 SW6       30.25S

PHILLIPS       CLEAR     41  34  76 CALM      30.25R

ANTIGO         CLEAR     44  35  72 SW6       30.27S

TOMAHAWK       CLEAR     41  34  75 CALM      30.26S

MERRILL        CLEAR     40  32  74 CALM      30.26S

$$



WIZ013-073-190800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLEAR     41  35  79 SE3       30.23R

MARINETTE      CLEAR     50  39  66 SW7       30.28R

OCONTO         CLEAR     46  35  64 SW3       30.29S

$$



WIZ017-030-035>037-045-190800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLEAR     47  36  66 SW3       30.26S

WAUSAU         CLEAR     42  36  79 NE3       30.27S

MOSINEE        CLEAR     43  36  75 S8        30.27S

MARSHFIELD     CLEAR     46  36  68 SW7       30.28S

WISC RAPIDS    CLEAR     40  38  93 CALM      30.30R

STEVENS POINT  CLEAR     46  38  74 SW3       30.30R

WAUPACA        CLEAR     39  35  85 S3        30.34S

SHAWANO        CLEAR     49  38  65 CALM      30.29S

CLINTONVILLE   NOT AVBL

WAUTOMA        CLEAR     36  35  96 CALM      30.32S

$$



WIZ038-039-048-051-190800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLEAR     48  39  71 S5        30.31R

APPLETON       CLEAR     45  41  87 SW8       30.32S

OSHKOSH        CLEAR     45  38  76 S7        30.32S

FOND DU LAC    CLEAR     45  38  76 S8        30.34R

$$



WIZ022-050-052-190800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLEAR     49  38  66 SW5       30.28R

WASHINGTON ISL CLEAR     53  38  57 S7        30.26S

STURGEON BAY   CLEAR     48  40  73 SW8       30.30R

MANITOWOC      CLEAR     44  39  82 S3        30.34R

SHEBOYGAN      CLEAR     46  37  71 SW8       30.34R

$$



LMZ563-521-522-541>543-190800-

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 0650   53     220/  7/  8 1027.8R

KEWAUNEE LKSHORE 0624          200/  5/  6 1025.9

NORTHPORT PIER   0600   52     160/  4/ 12 1025.4

N MID LAKE BUOY  0650   55 53  220/ 17/ 21 1024.8R         8/ 8

MENOMINEE LKSHOR 0624   53 59  210/  9/ 12 1024.7

$$

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.