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.}

317
SXUS43 KGRB 041951
RECGRB
WIZ048-WIZ049-050900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
251 PM CDT Fri Sep 4 2026

.REST OF THE AFTERNOON...Northeast winds around 5 knots. Mostly
cloudy. Waves 1 foot or less. Near steady temperature in the
upper 70s.
.TONIGHT...Northeast winds 5 to 10 knots. Slight chance of
thunderstorms through the night. patchy fog after midnight. Waves
less than 1 foot. Lows in the upper 60s.
.SATURDAY...Northeast winds 5 to 10 knots. Patchy fog in the
morning. Waves 1 foot or less. Highs in the upper 70s.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Mostly clear.
Waves 1 foot or less. Lows in the lower 60s.
.SUNDAY...East winds around 5 knots. Mostly sunny. Waves 1 foot
or less. Highs in the upper 70s.

$$

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

    
                        

607

ASUS43 KGRB 042110

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

400 PM CDT FRI SEP 04 2026



WIZ005-009-010>012-018-019-042200-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    69  67  93 N5        29.98R

MANITOWISH WTR CLOUDY    83  74  74 E6        29.95F

ARBOR VITAE    CLOUDY    72  70  94 CALM      29.96S

EAGLE RIVER    CLOUDY    72  69  90 E3        29.97R

LAND O LAKES   CLOUDY    75  70  82 E3        30.00R

RHINELANDER    CLOUDY    69  68  96 E5        29.96S FOG

PHILLIPS       CLOUDY    80  71  74 N5        29.92S

ANTIGO         CLOUDY    75  75 100 E6        29.95S FOG

TOMAHAWK       CLOUDY    81  76  85 CALM      29.94S

MERRILL        PTSUNNY   84  77  80 E8        29.91F HX  93

$$



WIZ013-073-042200-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    66  65  96 NE7       29.96F FOG

MARINETTE      CLOUDY    73  71  93 E7        29.94F

OCONTO         CLOUDY    74  72  93 NE3       29.93S

$$



WIZ017-030-035>037-045-042200-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        PTSUNNY   82  75  79 NE10      29.90F

WAUSAU         PTSUNNY   84  75  74 E8        29.89F HX  92

MOSINEE        CLOUDY    82  75  78 S5        29.90S

MARSHFIELD     MOSUNNY   87  75  67 SW9       29.89F HX  96

WISC RAPIDS    PTSUNNY   84  73  69 SW9       29.90F HX  90

STEVENS POINT  PTSUNNY   86  73  65 SW5       29.90S HX  92

WAUPACA        PTSUNNY   81  70  69 CALM      29.92S

SHAWANO        CLOUDY    78  72  81 NE9       29.91F

CLINTONVILLE   CLOUDY    80  74  81 NE13      29.91S

WAUTOMA        PTSUNNY   80  73  79 S6        29.90S

$$



WIZ038-039-048-051-042200-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    77  71  82 NE13      29.90S

APPLETON       MOSUNNY   84  73  70 W6        29.90  HX  91

OSHKOSH        PTSUNNY   81  73  76 S6        29.89F

FOND DU LAC    PTSUNNY   80  71  74 VRB6      29.90S

$$



WIZ022-050-052-042200-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    72  67  86 SE3       29.93F

WASHINGTON ISL CLOUDY    71  67  88 E6        29.95S

STURGEON BAY   CLOUDY    73  69  87 E6        29.94F

MANITOWOC      PTSUNNY   75  69  81 SE9       29.91F

SHEBOYGAN      PTSUNNY   78  71  79 SE8       29.91S

$$



LMZ563-521-522-541>543-042200-

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 2050   69     150/  5/  7 1012.5F

KEWAUNEE LKSHORE 2024           80/  4/  5 1013.0

NORTHPORT PIER   2000          120/  6     1014.9

N MID LAKE BUOY  2050   70 70   80/ 12/ 14 1014.0S         1/ 4

CHAMBERS ISLAND  2040   74      50/  4/  6   N/A

MENOMINEE LKSHOR 2024   72 74   20/  6/  7 1013.7

$$

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.