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.}

011
SXUS43 KGRB 161821
RECGRB
WIZ048-WIZ049-162100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
121 PM CDT Sat May 16 2026

.THIS AFTERNOON...West winds 5 to 15 knots. Sunny. Waves 1 foot
or less. Highs 76 to 83.
.TONIGHT...Northwest winds up to 10 knots veering east after
midnight. Partly cloudy in the evening then becoming mostly
cloudy. Waves 1 foot or less. Lows in the lower 50s.
.SUNDAY...East winds around 15 knots. Chance of rain showers in
the morning, then rain showers likely and slight chance of
thunderstorms in the afternoon. Waves 1 foot or less. Highs 60 to
66.
.SUNDAY NIGHT...South winds around 15 knots. Chance of rain
showers after midnight. Waves 1 foot or less. Lows around 60.

$$

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

    
                        

411

ASUS43 KGRB 162010

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

300 PM CDT SAT MAY 16 2026



WIZ005-009-010>012-018-019-162100-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       SUNNY     74  33  22 SW24G31   29.75F

MANITOWISH WTR SUNNY     74  33  22 W13G24    29.77F

ARBOR VITAE    SUNNY     76  31  19 W13G29    29.77S

EAGLE RIVER    SUNNY     76  26  15 W23G32    29.76S

LAND O LAKES   SUNNY     76  29  18 W15G22    29.77F

RHINELANDER    SUNNY     77  28  16 W23G40    29.78S

PHILLIPS       SUNNY     74  34  23 W8G23     29.79S

ANTIGO         SUNNY     78  36  22 W20G26    29.80R

TOMAHAWK       SUNNY     79  31  17 W12G23    29.79S

MERRILL        SUNNY     79  24  13 W17G29    29.78S

$$



WIZ013-073-162100-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  SUNNY     80  31  16 W18G33    29.72S

MARINETTE      SUNNY     84  32  15 W14G25    29.72S

OCONTO         SUNNY     85  31  14 W13G23    29.73S

$$



WIZ017-030-035>037-045-162100-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        SUNNY     76  32  20 W12G24    29.82R

WAUSAU         SUNNY     80  33  18 SW20G31   29.80R

MOSINEE        SUNNY     79  37  22 W21       29.81R

MARSHFIELD     MOSUNNY   79  35  20 W15G25    29.83R

WISC RAPIDS    MOSUNNY   83  34  17 W10G22    29.82R

STEVENS POINT  MOSUNNY   82  36  18 W8G20     29.82S

WAUPACA        SUNNY     87  27  11 W17G25    29.82S

SHAWANO          N/A     84  24  11 W12G23    29.77R

CLINTONVILLE   SUNNY     84  35  17 W17G24    29.79R

WAUTOMA        SUNNY     85  36  17 W16G28    29.81S

$$



WIZ038-039-048-051-162100-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  SUNNY     84  34  16 SW14      29.76S

APPLETON       SUNNY     84  37  18 W16G24    29.80R

OSHKOSH        SUNNY     82  44  26 VRB5      29.80S

FOND DU LAC    SUNNY     81  47  30 SW13G22   29.82S

$$



WIZ022-050-052-162100-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        SUNNY     81  27  14 SW8       29.72F

WASHINGTON ISL SUNNY     78  32  18 S8        29.72S

STURGEON BAY   SUNNY     83  35  18 W16       29.75S

MANITOWOC      SUNNY     82  44  26 W12G23    29.79S

SHEBOYGAN      SUNNY     82  51  34 SW17      29.81R HAZE

$$



LMZ563-521-522-541>543-162100-

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 2000   66     180/ 21/ 22 1009.2R

KEWAUNEE LKSHORE 1924          270/ 18/ 21 1007.3

NORTHPORT PIER   1900          110/  8     1007.5

MENOMINEE LKSHOR 1924   82 53  240/ 19/ 24 1006.3

$$

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.