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.}

337
SXUS43 KGRB 171922
RECGRB
WIZ048-WIZ049-180900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
221 PM CDT Fri Apr 17 2026

...FLOOD WATCH IN EFFECT THROUGH SATURDAY MORNING...
...TORNADO WATCH 129 IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.REST OF THE AFTERNOON...South winds 15 to 20 knots. Showers
likely and chance of thunderstorms. Waves less than 1 foot. Highs
67 to 72.
.TONIGHT...South winds 15 to 20 knots veering west after
midnight. Chance of thunderstorms in the evening, then rain
showers likely and slight chance of thunderstorms after midnight.
patchy fog after midnight. Waves less than 1 foot. Lows in the
upper 30s.
.SATURDAY...West winds 15 to 20 knots. Mostly sunny. Waves less
than 1 foot. Highs in the mid 40s.
.SATURDAY NIGHT...West winds 10 to 20 knots. Partly cloudy. Waves
less than 1 foot. Lows in the lower 30s.
.SUNDAY...Northwest winds 10 to 15 knots. Chance of snow showers
and rain showers in the morning. Waves less than 1 foot. Highs in
the lower 40s.

$$

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

    
                        

246

ASUS43 KGRB 171859

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 PM CDT FRI APR 17 2026



WIZ005-009-010>012-018-019-172000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    73  47  39 SE14G22   29.52F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLOUDY    75  45  35 S21G32    29.61F

EAGLE RIVER    CLOUDY    74  38  27 S9G23     29.64F

LAND O LAKES   CLOUDY    74  45  35 S15G24    29.66F

RHINELANDER    CLOUDY    74  46  36 S18G33    29.64F

PHILLIPS       PTSUNNY   75  51  42 S22G32    29.57F

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-172000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    69  54  58 SE15G26   29.71F

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-172000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        PTSUNNY   72  54  53 S23G32    29.62F

WAUSAU         NOT AVBL

MOSINEE        SUNNY     77  55  47 S23G33    29.65F

MARSHFIELD     PTSUNNY   74  58  57 S22G35    29.61F

WISC RAPIDS    PTSUNNY   76  58  53 S13G25    29.65F

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        PTSUNNY   75  55  50 SE16      29.71F HAZE

CLINTONVILLE   NOT AVBL

WAUTOMA        MOSUNNY   77  61  57 S20       29.66F

$$



WIZ038-039-048-051-172000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOSUNNY   70  59  68 SE17      29.75F

APPLETON       PTSUNNY   75  61  60 SE16G25   29.73F

OSHKOSH        MOSUNNY   76  60  57 S20G35    29.70F

FOND DU LAC    MOSUNNY   75  60  59 S25G36    29.72F

$$



WIZ022-050-052-172000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      CLOUDY    52  51  97 S16G26    29.81F

SHEBOYGAN      MOSUNNY   56  52  86 S15G28    29.80F

$$



LMZ563-521-522-541>543-172000-

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 1800   40     170/ 11/ 12 1011.1F

KEWAUNEE LKSHORE 1812          180/ 16/ 21 1010.0

NORTHPORT PIER   1800   45     130/ 13/ 18 1011.2

MENOMINEE LKSHOR 1812          150/ 12/ 15 1008.5

$$

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.