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.}

927
SXUS43 KGRB 151821
RECGRB
WIZ048-WIZ049-152100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
121 PM CDT Thu Oct 15 2026

...FREEZE WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY
MORNING...

.THIS AFTERNOON...East winds around 10 knots. Rain. Waves 1 foot
or less. Near steady temperature in the upper 50s.
.TONIGHT...Northeast winds 5 to 20 knots becoming northwest 20 to
30 knots after midnight. Rain in the evening, then rain likely
after midnight. Waves 1 to 3 feet building to 3 to 6 feet after
midnight. Lows in the upper 40s.
.FRIDAY...North winds 20 to 25 knots. Rain likely in the morning,
then chance of rain in the afternoon. Waves 4 to 7 feet. Near
steady temperature in the upper 40s.
.FRIDAY NIGHT...North winds 10 to 25 knots backing northwest 5 to
15 knots after midnight. Mostly clear. Waves 3 to 5 feet. Lows in
the mid 30s.

$$

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

    
                        

019

ASUS43 KGRB 151910

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 PM CDT THU OCT 15 2026



WIZ005-009-010>012-018-019-152000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       LGT RAIN  49  47  93 SE5       29.98F

MANITOWISH WTR LGT RAIN  48  48  99 SE5       29.99F

ARBOR VITAE    RAIN      46  45  93 SE3       30.00F

EAGLE RIVER    LGT RAIN  47  47 100 SE5       30.00F

LAND O LAKES   NOT AVBL

RHINELANDER    RAIN      47  46  97 SE3       30.00F FOG

PHILLIPS       LGT RAIN  48  48  99 E5        29.99F

ANTIGO         DRIZZLE   48  48 100 SE7       30.01F

TOMAHAWK       CLOUDY    48  46  95 CALM      30.01F

MERRILL        LGT RAIN  49  48  99 SE5       29.99F

$$



WIZ013-073-152000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  LGT RAIN  48  47  96 SE8       30.01F FOG

MARINETTE      LGT RAIN  52  48  86 SE10      30.03F

OCONTO         CLOUDY    51  49  93 E7        30.01F

$$



WIZ017-030-035>037-045-152000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    50  49  99 E5        29.98F

WAUSAU         NOT AVBL

MOSINEE        LGT RAIN  50  48  93 E9        29.96F FOG

MARSHFIELD     RAIN      50  49  96 E9        29.95F

WISC RAPIDS    RAIN      51  50  96 E10       29.95F FOG

STEVENS POINT  RAIN      52  50  93 E7        29.97F

WAUPACA        RAIN      51  50  97 NE3       30.02F

SHAWANO        RAIN      53  51  94 E5        30.02F

CLINTONVILLE   RAIN      50  49  96 E6        30.01F FOG

WAUTOMA        RAIN      52  52 100 NE9       29.96F FOG

$$



WIZ038-039-048-051-152000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  RAIN      52  50  93 E5        30.00F FOG

APPLETON       LGT RAIN  54  54 100 E9        30.00F FOG

OSHKOSH        RAIN      54  53  97 E9        29.96F FOG

FOND DU LAC    HVY RAIN  54  53  97 NE7       29.95F FOG

$$



WIZ022-050-052-152000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        LGT RAIN  49  47  92 E5        30.03F

WASHINGTON ISL LGT RAIN  52  48  86 SE3       30.04F

STURGEON BAY   LGT RAIN  51  50  96 E9        30.02F

MANITOWOC      RAIN      55  53  93 E9        29.99F

SHEBOYGAN      RAIN      55  54  96 SE9       29.95F FOG

$$



LMZ563-521-522-541>543-152000-

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 1850   55     120/ 19/ 21 1014.6F

KEWAUNEE LKSHORE 1830          100/  4/  5 1016.3F

NORTHPORT PIER   1800           90/  5/  8 1019.6

N MID LAKE BUOY  1850   53 60  130/  6/  8 1017.9F         1/ 3

MENOMINEE LKSHOR 1830   53 62   90/ 10/ 12 1017.3F

$$

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.