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.}

478
SXUS43 KGRB 011116
RECGRB
WIZ048-WIZ049-012100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
616 AM CDT Wed Jul 1 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT
THIS EVENING...

.TODAY...Southwest winds 10 to 15 knots. Thunderstorms likely in
the morning, then chance of thunderstorms in the afternoon. Waves
1 foot or less. Highs 82 to 87.
.TONIGHT...Southwest winds 10 to 15 knots. Chance of
thunderstorms through the night. Showers likely after midnight.
Waves 1 foot or less. Lows in the lower 70s.
.THURSDAY...Southwest winds 5 to 15 knots. Slight chance of
thunderstorms. Waves 1 foot or less. Highs in the lower 80s.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Chance of
thunderstorms in the evening. Showers likely through the night.
Waves less than 1 foot. Lows in the upper 60s.

$$

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

    
                        

293

ASUS43 KGRB 011459

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

1000 AM CDT WED JUL 01 2026



WIZ005-009-010>012-018-019-011600-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTSUNNY   74  64  71 SW5       29.87S

MANITOWISH WTR NOT AVBL

ARBOR VITAE    PTSUNNY   73  69  88 S5        29.91F

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    PTSUNNY   76  70  82 S7        29.90F

PHILLIPS       NOT AVBL

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-011600-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTSUNNY   82  73  74 S6        29.88F

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-011600-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    65  65  97 SW9G20    29.93S

WAUSAU         LGT RAIN  75  72  90 W7        29.90R

MOSINEE        LGT RAIN  73  72  94 NW8G16    29.90F

MARSHFIELD     LGT RAIN  70  63  78 N5        29.91F

WISC RAPIDS    PTSUNNY   79  73  82 VRB7      29.90S

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        PTSUNNY   80  71  74 VRB5      29.91F

$$



WIZ038-039-048-051-011600-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  PTSUNNY   70  68  93 SW6       29.89F

APPLETON       PTSUNNY   79  72  78 VRB3      29.91F

OSHKOSH        PTSUNNY   76  72  87 SE3       29.90F

FOND DU LAC    MOSUNNY   84  76  76 SW8       29.91F HX  93

$$



WIZ022-050-052-011600-

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  71  71 100 N5        29.92F

SHEBOYGAN      MOSUNNY   78  68  71 CALM      29.91F

$$



LMZ563-521-522-541>543-011600-

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 1400   81     200/ 10/ 11 1012.3F

KEWAUNEE LKSHORE 1412          290/  3/  6 1013.4

NORTHPORT PIER   1400          270/  2     1012.9

N MID LAKE BUOY  1440   65 62  230/  8/ 10 1013.0R

MENOMINEE LKSHOR 1412   81 72  240/  7/  9 1013.2

$$

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.