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.}

912
SXUS43 KGRB 251947
RECGRB
WIZ048-WIZ049-260900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
246 PM CDT Sun Oct 25 2026

.REST OF THE AFTERNOON...Northwest winds around 5 knots. Mostly
cloudy. Waves 1 foot or less. Near steady temperature in the
upper 60s.
.TONIGHT...Northeast winds up to 10 knots rising to 10 to
15 knots after midnight. Cloudy. Waves 1 to 2 feet. Lows around
50.
.MONDAY...Northeast winds 10 to 15 knots. Mostly cloudy. Waves
1 to 3 feet. Near steady temperature in the lower 50s.
.MONDAY NIGHT...East winds 10 to 15 knots. Mostly cloudy. Waves
1 to 3 feet building to 2 to 4 feet after midnight. Lows in the
upper 40s.
.TUESDAY...Southeast winds 10 to 15 knots. Partly sunny. Waves
1 to 3 feet. Highs in the lower 60s.

$$

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

    
                        

789

ASUS43 KGRB 252010

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

300 PM CDT SUN OCT 25 2026



WIZ005-009-010>012-018-019-252100-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOSUNNY   56  20  24 W8        30.37F

MANITOWISH WTR MOSUNNY   54  19  25 NW5       30.36F

ARBOR VITAE    PTSUNNY   54  27  35 N7        30.36F

EAGLE RIVER    CLOUDY    53  28  38 CALM      30.35F

LAND O LAKES   MOSUNNY   52  26  36 N6        30.38S

RHINELANDER    CLOUDY    51  35  54 VRB3      30.37S

PHILLIPS       PTSUNNY   55  28  34 N5        30.37F

ANTIGO         CLOUDY    51  38  60 N7        30.36F

TOMAHAWK       CLOUDY    50  39  66 CALM      30.37F

MERRILL        CLOUDY    50  39  65 CALM      30.36S

$$



WIZ013-073-252100-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  LGT RAIN  50  44  80 W3        30.34F

MARINETTE      CLOUDY    57  54  89 E9        30.34F

OCONTO         PTSUNNY   64  49  59 N7        30.33S

$$



WIZ017-030-035>037-045-252100-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    49  40  70 N3        30.37S

WAUSAU         CLOUDY    55  40  56 N6        30.35F

MOSINEE        CLOUDY    57  41  54 N9        30.34F

MARSHFIELD     CLOUDY    56  38  50 NE7       30.35S

WISC RAPIDS    PTSUNNY   65  49  56 N8        30.33F

STEVENS POINT  CLOUDY    65  52  62 NW5       30.33S

WAUPACA        SUNNY     71  53  53 CALM      30.34S

SHAWANO        CLOUDY    67  53  59 E3        30.32F

CLINTONVILLE   CLOUDY    69  54  59 NE7       30.33S

WAUTOMA        MOSUNNY   71  53  52 NW6       30.31F

$$



WIZ038-039-048-051-252100-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    68  51  54 CALM      30.31F

APPLETON       PTSUNNY   70  54  56 W6        30.31F

OSHKOSH        MOSUNNY   68  54  60 NE8       30.30F

FOND DU LAC    MOSUNNY   70  50  49 W5        30.31F

$$



WIZ022-050-052-252100-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    56  52  87 N6        30.33F

WASHINGTON ISL CLOUDY    55  53  96 N7        30.33F

STURGEON BAY   CLOUDY    59  53  80 N9        30.33F

MANITOWOC      MOSUNNY   71  53  52 W3        30.31F

SHEBOYGAN      MOSUNNY   76  51  41 W7        30.30F

$$



LMZ563-521-522-541>543-252100-

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 1910   60     180/ 19/ 21 1025.9

KEWAUNEE LKSHORE 1924          180/  5/  5 1026.1

NORTHPORT PIER   1900   55     310/ 11/ 13 1028.1

N MID LAKE BUOY  1910   54 57   20/ 14/ 16 1027.1

MENOMINEE LKSHOR 1924   55 56   40/ 12/ 13 1027.1

$$

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.