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.}

778
SXUS43 KGRB 090621
RECGRB
WIZ048-WIZ049-090900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
121 AM CDT Wed Sep 9 2026

.REST OF THE NIGHT...Southwest winds 10 to 15 knots. Chance of
thunderstorms. Waves 1 to 3 feet. Near steady temperature in the
lower 70s.
.WEDNESDAY...West winds 10 to 15 knots. Patchy fog in the
morning. slight chance of showers in the morning. Waves 1 to
2 feet. Highs in the upper 70s.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Mostly clear.
Waves 1 foot or less. Lows around 60.
.THURSDAY...Northwest winds 5 to 10 knots. Sunny. Waves 1 foot or
less. Highs in the mid 70s.

$$

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

    
                        

703

ASUS43 KGRB 090710

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 AM CDT WED SEP 09 2026



WIZ005-009-010>012-018-019-090800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTCLDY    68  66  93 W9        29.90R

MANITOWISH WTR MOCLDY    74  74 100 W6        29.91S

ARBOR VITAE    CLOUDY    68  68 100 W9        29.91S

EAGLE RIVER    CLOUDY    67  67 100 W8        29.91F

LAND O LAKES   CLOUDY    73  71  92 W7        29.92F

RHINELANDER    CLOUDY    67  66  97 SW5       29.93S

PHILLIPS       CLOUDY    69  68  96 W6        29.92S

ANTIGO         CLOUDY    71  71  99 SW6       29.94F

TOMAHAWK       CLOUDY    73  72  95 CALM      29.93F

MERRILL        CLOUDY    72  72  99 SW3       29.92F

$$



WIZ013-073-090800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTCLDY    63  62  97 SE3       29.88F

MARINETTE      MOCLDY    71  68  90 SW9       29.91S

OCONTO         MOCLDY    70  69  99 SW7       29.92S

$$



WIZ017-030-035>037-045-090800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    69  69  99 SW5       29.94F

WAUSAU         CLOUDY    70  67  90 S7        29.93F

MOSINEE        CLOUDY    70  68  94 SW8       29.94F

MARSHFIELD     CLOUDY    70  68  93 W9G20     29.95F

WISC RAPIDS    CLOUDY    72  68  87 W6        29.95F

STEVENS POINT  LGT RAIN  72  70  92 SW8       29.95F

WAUPACA        CLOUDY    69  66  89 S5        29.97F

SHAWANO        CLOUDY    72  67  86 SW6       29.93S

CLINTONVILLE   CLOUDY    71  68  89 SW8       29.94F

WAUTOMA        CLOUDY    71  69  93 SW7       29.96F

$$



WIZ038-039-048-051-090800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    73  68  84 SW8       29.93F

APPLETON       CLOUDY    73  70  88 SW9       29.96F

OSHKOSH        MOCLDY    72  68  87 SW10      29.95F

FOND DU LAC    PTCLDY    71  68  90 S8        29.97F

$$



WIZ022-050-052-090800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        MOCLDY    71  66  85 W9G17     29.90F

WASHINGTON ISL MOCLDY    71  67  88 SW8       29.89F

STURGEON BAY   MOCLDY    72  68  87 SW10      29.93S

MANITOWOC      MOCLDY    74  68  81 SW10      29.96S

SHEBOYGAN      MOCLDY    70  67  90 SW10      29.97F

$$



LMZ563-521-522-541>543-090800-

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 0650   72     210/ 10/ 13 1014.6S

KEWAUNEE LKSHORE 0624          190/  5/  6 1013.4

NORTHPORT PIER   0600          150/  4/  9 1013.2

N MID LAKE BUOY  0650   72 70  210/ 17/ 21 1011.6F         5/ 6

CHAMBERS ISLAND  0640   72     170/  7/ 13   N/A

MENOMINEE LKSHOR 0624   72 74  220/ 10/ 13 1012.4

$$

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.