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.}

575
SXUS43 KGRB 191912
RECGRB
WIZ048-WIZ049-200900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
212 PM CDT Sun Jul 19 2026

.REST OF THE AFTERNOON...Southeast winds up to 5 knots. Areas of
smoke. Waves less than 1 foot. Highs around 80.
.TONIGHT...South winds 5 to 15 knots. Patchy smoke through the
night. Waves 1 to 2 feet. Lows in the mid 60s.
.MONDAY...Southwest winds 10 to 20 knots. Patchy smoke through
the day. slight chance of thunderstorms in the afternoon. Waves
1 to 3 feet. Highs in the lower 80s.
.MONDAY NIGHT...Southwest winds 15 to 20 knots. Showers likely
and chance of thunderstorms in the evening. Waves 1 to 3 feet.
Lows in the upper 60s.
.TUESDAY...Northwest winds 15 to 20 knots. Mostly sunny. Waves
1 to 3 feet. Highs in the upper 70s.

$$

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

    
                        

851

ASUS43 KGRB 191959

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

300 PM CDT SUN JUL 19 2026



WIZ005-009-010>012-018-019-192100-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       MOSUNNY   82  63  52 SW14      29.98F

MANITOWISH WTR NOT AVBL

ARBOR VITAE    NOT AVBL

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    MOSUNNY   80  59  48 SW9       30.04F HAZE

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-192100-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   83  61  47 SW9       29.99F HAZE

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-192100-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         MOSUNNY   81  57  43 MISG      30.03F HAZE

MOSINEE        SUNNY     79  59  50 W3        30.04F HAZE

MARSHFIELD     CLOUDY    79  63  57 S6        30.04F HAZE

WISC RAPIDS    CLOUDY    82  57  42 VRB5      30.03F HAZE

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        MOSUNNY   81  58  45 VRB3      30.03F HAZE

$$



WIZ038-039-048-051-192100-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  SUNNY     79  58  48 CALM      30.02F HAZE

APPLETON       MOSUNNY   81  55  41 SW6       30.05F SMOKE

OSHKOSH        SUNNY     81  54  39 VRB5      30.03F HAZE

FOND DU LAC    MOSUNNY   80  56  43 CALM      30.04F HAZE

$$



WIZ022-050-052-192100-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      SUNNY     75  62  64 SE12      30.04F HAZE

SHEBOYGAN      CLOUDY    78  58  49 SE10      30.04F HAZE

$$



LMZ563-521-522-541>543-192100-

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 1900   70     130/  6/  6 1018.0F

KEWAUNEE LKSHORE 1906          160/ 10/ 11 1017.4

NORTHPORT PIER   1900          110/ 10/ 11 1017.6

N MID LAKE BUOY  1940   67 68  170/  6/  8 1016.9F

MENOMINEE LKSHOR 1912      78  160/ 11/ 15 1016.6

$$

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.