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Lake Winnebago Forecast                                       About these forecasts


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Lake Winnebago Recreational Forecast
Note: Experimental product. Check product creation time to verify this is a current forecast.

901
SXUS43 KGRB 150610
RECGRB
WIZ048-WIZ049-150900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
110 AM CDT Sun Jun 15 2025

.REST OF THE NIGHT...Northeast winds 5 to 10 knots. Mostly
cloudy. Waves less than 1 foot. Lows in the upper 50s.
.SUNDAY...East winds 5 to 10 knots. Slight chance of rain
showers. Waves less than 1 foot. Highs around 70.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Slight chance of
thunderstorms in the evening, then chance of thunderstorms after
midnight. Waves less than 1 foot. Lows in the lower 60s.
.MONDAY...South winds 5 to 10 knots. Chance of showers in the
morning, then chance of thunderstorms in the afternoon. Waves
less than 1 foot. Highs in the mid 70s.

$$



 

Local Observations
Note: Check product creation time to verify this is a current product.
    
                        
486
ASUS43 KGRB 150559
RWRGRB

NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE GREEN BAY WI
100 AM CDT SUN JUN 15 2025

WIZ005-009-010>012-018-019-150700-
NORTH CENTRAL WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
IRONWOOD CLOUDY 54 53 97 E3 30.17F
MANITOWISH WTR NOT AVBL
ARBOR VITAE CLOUDY 53 52 97 E3 30.17R
EAGLE RIVER CLOUDY 51 51 100 E5 30.17S FOG
LAND O LAKES CLOUDY 53 52 97 CALM 30.20R
RHINELANDER CLOUDY 51 51 100 E6 30.18R FOG
PHILLIPS CLOUDY 54 54 100 CALM 30.16R FOG
ANTIGO NOT AVBL
TOMAHAWK NOT AVBL
MERRILL NOT AVBL
$$

WIZ013-073-150700-
NORTHEAST WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
IRON MOUNTAIN CLOUDY 54 53 97 CALM 30.16R
MARINETTE NOT AVBL
$$

WIZ017-030-035>037-045-150700-
CENTRAL WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
MEDFORD CLOUDY 54 53 97 E6 30.14R
WAUSAU CLOUDY 54 50 86 E6 30.15R
MOSINEE CLOUDY 54 52 94 E9 30.14R
MARSHFIELD CLOUDY 56 52 86 E12 30.12S
WISC RAPIDS MOCLDY 57 52 83 E9 30.13R
STEVENS POINT CLOUDY 56 53 91 E7 30.14R
WAUPACA MOCLDY 57 52 83 NE5 30.14S
SHAWANO CLOUDY 56 53 90 NE7 30.16S
CLINTONVILLE NOT AVBL
WAUTOMA PTCLDY 56 52 86 NE7 30.12S
$$

WIZ038-039-048-051-150700-
FOX VALLEY

CITY SKY/WX TMP DP RH WIND PRES REMARKS
NWS GREEN BAY CLOUDY 57 53 86 N7 30.13S
APPLETON MOCLDY 59 54 82 NE6 30.14R
OSHKOSH PTCLDY 59 53 80 E7 30.12R
FOND DU LAC CLOUDY 60 52 74 NE6 30.12S
$$

WIZ022-050-052-150700-
EAST CENTRAL WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
EPHRAIM NOT AVBL
WASHINGTON ISL NOT AVBL
STURGEON BAY NOT AVBL
MANITOWOC CLOUDY 57 50 77 N5 30.13S
SHEBOYGAN CLOUDY 56 53 90 NE5 30.12R
$$

LMZ563-521-522-541>543-150700-
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 0500 54 20/ 10/ 11 1019.8R
KEWAUNEE LKSHORE 0524 56 10/ 10/ 14 1018.6
NORTHPORT PIER 0450 270/ 5/ 6 N/A
N MID LAKE BUOY 0540 47 44 30/ 8/ 8 1021.2S
S GREEN BAY BUOY 0500 57 60 60/ 12/ 14 1000.1 1/ 3
CHAMBERS ISLAND 0540 56 360/ 8/ 10 N/A
MENOMINEE LKSHOR 0524 56 66 10/ 10/ 11 1020.1
$$



 

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.