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.}

267
SXUS43 KGRB 011126
RECGRB
WIZ048-WIZ049-012100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
626 AM CDT Fri May 1 2026

...FROST ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING...

.TODAY...North winds around 5 knots. Areas of frost in the
morning. chance of rain showers in the afternoon. Waves 1 foot or
less. Highs in the upper 40s.
.TONIGHT...Northeast winds around 5 knots. Chance of rain showers
in the evening. areas of frost after midnight. Waves 1 foot or
less. Lows in the lower 30s.
.SATURDAY...Northwest winds around 5 knots. Widespread frost in
the morning. Waves 1 foot or less. Highs in the lower 50s.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Chance of rain
showers after midnight. Waves 1 foot or less. Lows in the lower
40s.

$$

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

    
                        

358

ASUS43 KGRB 011101

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 AM CDT FRI MAY 01 2026



WIZ005-009-010>012-018-019-011200-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    30  27  88 CALM      30.04S

MANITOWISH WTR CLOUDY    31  24  74 CALM      30.01S

ARBOR VITAE    CLOUDY    31  24  74 CALM      30.00S

EAGLE RIVER    CLOUDY    30  24  79 CALM      30.00S

LAND O LAKES   NOT AVBL

RHINELANDER    CLOUDY    29  23  78 CALM      30.00S

PHILLIPS       CLOUDY    31  23  74 CALM      30.02S

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-011200-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    32  27  81 NW5       29.99S

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-011200-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        NOT AVBL

WAUSAU         NOT AVBL

MOSINEE        NOT AVBL

MARSHFIELD     PTCLDY    32  23  69 N6        30.01S

WISC RAPIDS    MOCLDY    33  26  75 N5        30.02R

STEVENS POINT  PTCLDY    29  27  92 CALM      30.02S

WAUPACA        NOT AVBL

SHAWANO        NOT AVBL

CLINTONVILLE   CLOUDY    34  32  92 N6        30.04R

WAUTOMA        PTCLDY    28  26  92 CALM      30.02R

$$



WIZ038-039-048-051-011200-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    34  33  96 CALM      30.02S

APPLETON       MOCLDY    37  36  93 N5        30.00S

OSHKOSH        CLEAR     34  32  92 N6        30.00R

FOND DU LAC    PTCLDY    35  34  96 NW5       30.00R

$$



WIZ022-050-052-011200-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    34  28  79 N7        30.00R

WASHINGTON ISL CLOUDY    36  29  75 N8        30.00S

STURGEON BAY   NOT AVBL

MANITOWOC      MIX PCPN  37  34  89 N6        30.01S

SHEBOYGAN      CLOUDY    37  33  85 N3        29.99S

$$



LMZ563-521-522-541>543-011200-

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)

$$

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.