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.}

381
SXUS43 KGRB 120646
RECGRB
WIZ048-WIZ049-120900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
146 AM CDT Sun Apr 12 2026

.REST OF THE NIGHT...Southeast winds 10 to 15 knots. Chance of
thunderstorms. Waves 1 foot or less. Near steady temperature in
the mid 40s.
.SUNDAY...South winds 10 to 20 knots. Patchy fog in the morning.
rain showers likely in the morning. Chance of thunderstorms
through the day. Waves 1 to 2 feet. Highs in the mid 60s.
.SUNDAY NIGHT...Southwest winds 15 to 25 knots. Patchy fog in the
evening. slight chance of rain showers in the evening. Waves 1 to
3 feet. Lows in the mid 50s.
.MONDAY...Southwest winds 5 to 15 knots. Chance of rain showers
in the afternoon. Waves 1 foot or less. Highs in the upper 60s.

$$

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

    
                        

606

ASUS43 KGRB 120659

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 AM CDT SUN APR 12 2026



WIZ005-009-010>012-018-019-120800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    41  39  93 SE16G26   29.88F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    TSTM      39  38  97 S12G22    29.94F

EAGLE RIVER    NOT AVBL

LAND O LAKES   RAIN      39  38  98 S5        29.99F

RHINELANDER    RAIN      40  38  93 S9G20     29.98F FOG

PHILLIPS       CLOUDY    40  40 100 SE9       29.93F

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-120800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  LGT RAIN  38  37  97 SE7       30.05F FOG

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-120800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    41  41  97 SE14G23   29.95F THUNDER

WAUSAU         RAIN      43  41  93 E9        29.97F FOG

MOSINEE        NOT AVBL

MARSHFIELD     LGT RAIN  41  39  93 SE10G21   29.95F

WISC RAPIDS    LGT RAIN  42  40  92 E9        29.97F FOG

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        LGT RAIN  45  43  93 E6        29.99F

$$



WIZ038-039-048-051-120800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    43  40  89 SE10      30.06F

APPLETON       NOT AVBL

OSHKOSH        LGT RAIN  46  43  89 S9        30.03F FOG

FOND DU LAC    HVY RAIN  47  44  90 S15       30.04F FOG

$$



WIZ022-050-052-120800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      LGT RAIN  41  40  96 SE8       30.08F

SHEBOYGAN      RAIN      44  41  89 S12G22    30.08F FOG

$$



LMZ563-521-522-541>543-120800-

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 0600   41     170/ 14/ 15 1019.9F

KEWAUNEE LKSHORE 0624   17      90/  7/  7 1019.4

NORTHPORT PIER   0600   39     120/  9/ 12 1022.0

MENOMINEE LKSHOR 0624   37 39  160/ 10/ 19 1019.4

$$

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.