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.}

156
SXUS43 KGRB 270556
RECGRB
WIZ048-WIZ049-270900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
1255 AM CDT Sun Jul 27 2025

.REST OF THE NIGHT...Southwest winds around 5 knots. Mostly
clear. Waves less than 1 foot. Near steady temperature in the mid
70s.
.SUNDAY...Southwest winds up to 5 knots backing south around
5 knots in the afternoon. Patchy fog in the morning. Waves less
than 1 foot. Highs in the mid 80s.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Mostly clear.
Waves less than 1 foot. Lows in the mid 70s.
.MONDAY...West winds 5 to 10 knots. Mostly sunny. Waves 1 foot or
less. Highs in the upper 80s.

$$

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

    
                        

833

ASUS43 KGRB 270610

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

100 AM CDT SUN JUL 27 2025



WIZ005-009-010>012-018-019-270700-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLEAR     74  68  81 SW7       29.95S

MANITOWISH WTR CLEAR     68  68 100 CALM      29.99R

ARBOR VITAE    CLEAR     69  67  94 CALM      29.99S

EAGLE RIVER    CLEAR     67  67 100 SW3       29.99R

LAND O LAKES   CLEAR     65  65 100 CALM      30.00S

RHINELANDER    CLEAR     69  67  93 W6        30.00R

PHILLIPS       CLEAR     71  67  88 CALM      29.99R

ANTIGO         CLEAR     67  66  97 CALM      30.00S

TOMAHAWK       CLEAR     65  61  89 MISG      30.00S

MERRILL        MOCLDY    65  65 100 CALM      29.99R FOG

$$



WIZ013-073-270700-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLEAR     71  68  90 CALM      29.93S

MARINETTE      CLEAR     74  71  91 SW5       29.94S

OCONTO         CLEAR     67  67  99 CALM      29.94S

$$



WIZ017-030-035>037-045-270700-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLEAR     67  66  97 CALM      30.00S

WAUSAU         CLEAR     70  69  97 CALM      29.98R

MOSINEE        CLEAR     70  68  94 W5        29.98S

MARSHFIELD     CLEAR     71  67  87 W5        29.99S

WISC RAPIDS    CLEAR     69  68  96 CALM      29.99R

STEVENS POINT  CLEAR     73  70  91 CALM      29.99R

WAUPACA        CLEAR     72  69  92 CALM      30.00R

SHAWANO        CLEAR     74  70  88 CALM      29.96S

CLINTONVILLE   CLEAR     72  69  91 CALM      29.98R

WAUTOMA        CLEAR     67  66  97 CALM      29.98R

$$



WIZ038-039-048-051-270700-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLEAR     69  69 100 CALM      29.96R

APPLETON       CLEAR     73  72  94 W6        29.97S

OSHKOSH        CLEAR     73  71  93 SW5       29.96S

FOND DU LAC    CLEAR     72  71  97 SW7       29.97F

$$



WIZ022-050-052-270700-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLEAR     73  71  94 W6        29.93S

WASHINGTON ISL CLOUDY    72  72 100 SW6       29.92S

STURGEON BAY   CLEAR     73  70  90 SW7       29.95F

MANITOWOC      CLEAR     73  71  93 W3        29.96S

SHEBOYGAN      CLEAR     69  69 100 SW3       29.97S FOG

$$



LMZ563-521-522-541>543-270700-

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   74     240/  7/  8 1014.0F

KEWAUNEE LKSHORE 0524   73     290/  3/  5 1012.8

NORTHPORT PIER   0500          170/  3/  7   N/A

N MID LAKE BUOY  0540   70 68  210/ 12/ 14 1013.0F

S GREEN BAY BUOY 0530   76 75  210/  6/  6  993.4R         1

CHAMBERS ISLAND  0540   75     150/  6/ 11   N/A

MENOMINEE LKSHOR 0524   76 75  220/  7/ 10 1012.8

$$

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.