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.}

207
SXUS43 KGRB 170701
RECGRB
WIZ048-WIZ049-170900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
201 AM CDT Sun May 17 2026

.REST OF THE NIGHT...Northeast winds 10 to 15 knots. Mostly
cloudy. Waves 1 foot or less. Lows in the lower 50s.
.SUNDAY...East winds 10 to 15 knots with gusts to around
30 knots. Slight chance of thunderstorms in the morning. Rain
showers likely through the day. Chance of thunderstorms in the
afternoon. Waves 1 foot or less. Highs in the lower 60s.
.SUNDAY NIGHT...East winds 10 to 15 knots veering south 15 to
20 knots after midnight. Chance of thunderstorms in the evening.
Chance of showers and slight chance of thunderstorms after
midnight. Waves 1 foot or less. Lows in the lower 60s.
.MONDAY...Southwest winds 15 to 20 knots. Chance of thunderstorms
through the day. Showers likely in the afternoon. Waves 1 foot or
less. Highs in the mid 70s.

$$

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

    
                        

642

ASUS43 KGRB 170759

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

300 AM CDT SUN MAY 17 2026



WIZ005-009-010>012-018-019-170900-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLEAR     36  35  96 E5        30.01R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    PTCLDY    41  37  86 NE3       29.98S

EAGLE RIVER    NOT AVBL

LAND O LAKES   NOT AVBL

RHINELANDER    MOCLDY    42  37  82 CALM      29.99R

PHILLIPS       MOCLDY    42  37  83 CALM      29.97R

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        MOCLDY    47  35  62 CALM      29.95S

$$



WIZ013-073-170900-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  PTCLDY    45  35  68 NE7       29.99R

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-170900-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         MOCLDY    52  38  58 NE8       29.94S

MOSINEE        NOT AVBL

MARSHFIELD     CLOUDY    54  39  57 NE9       29.94R

WISC RAPIDS    CLOUDY    59  36  42 E15G26    29.93R

STEVENS POINT  NOT AVBL

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   NOT AVBL

WAUTOMA        MOCLDY    58  40  51 NE15      29.91R

$$



WIZ038-039-048-051-170900-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MOCLDY    53  40  61 NE15      29.95R

APPLETON       NOT AVBL

OSHKOSH        MOCLDY    56  41  57 NE15G23   29.94R

FOND DU LAC    MOCLDY    58  44  60 N10       29.94R

$$



WIZ022-050-052-170900-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   MOCLDY    51  38  60 NE8       29.98R

MANITOWOC      MOCLDY    55  38  52 NE12G18   29.94S

SHEBOYGAN      MOCLDY    53  39  59 NE15      29.94R

$$



LMZ563-521-522-541>543-170900-

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 0700   50      10/ 20/ 21 1012.7R

KEWAUNEE LKSHORE 0724           20/ 11/ 15 1013.6

NORTHPORT PIER   0700          320/ 13     1015.2

MENOMINEE LKSHOR 0724   49 54   10/ 12/ 12 1014.3

$$

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.