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.}

795
SXUS43 KGRB 011326
RECGRB
WIZ048-WIZ049-012100-

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

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT
SATURDAY...

.TODAY...North winds 5 to 10 knots. Areas of frost early in the
morning. scattered rain showers in the afternoon. Waves 1 foot or
less. Highs in the mid 40s.
.TONIGHT...Northeast winds around 5 knots. Scattered 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.}

    
                        

035

ASUS43 KGRB 011410

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

900 AM CDT FRI MAY 01 2026



WIZ005-009-010>012-018-019-011500-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTSUNNY   34  26  72 N9        30.08R

MANITOWISH WTR CLOUDY    32  22  67 N10       30.04S

ARBOR VITAE    FLURRIES  33  26  73 N9        30.03S

EAGLE RIVER    LGT SNOW  32  28  84 N7        30.03R

LAND O LAKES   CLOUDY    32  26  76 N8        30.05R

RHINELANDER    CLOUDY    34  23  64 NW6       30.03R

PHILLIPS       MOSUNNY   35  23  62 NW9       30.04S

ANTIGO         CLOUDY    35  22  60 N7        30.03S

TOMAHAWK       CLOUDY    36  24  62 NW7       30.04S

MERRILL        NOT AVBL

$$



WIZ013-073-011500-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    36  26  67 N12       30.01S

MARINETTE      CLOUDY    37  29  72 N3        30.05S

OCONTO         CLOUDY    38  28  64 NW3       30.05S

$$



WIZ017-030-035>037-045-011500-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        PTSUNNY   36  23  59 N6        30.04R

WAUSAU         CLOUDY    38  23  55 NW6       30.04S

MOSINEE        SUNNY     39  23  52 NE8       30.03F

MARSHFIELD     SUNNY     39  23  52 VRB7G17   30.04S

WISC RAPIDS    SUNNY     40  22  48 NE10      30.05R

STEVENS POINT  SUNNY     40  27  59 NE6       30.05S

WAUPACA        PTSUNNY   41  30  65 NE3       30.08R

SHAWANO        CLOUDY    39  29  65 CALM      30.06R

CLINTONVILLE   CLOUDY    38  28  66 NE3       30.07R

WAUTOMA        MOSUNNY   40  29  64 NE8       30.04S

$$



WIZ038-039-048-051-011500-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    38  32  79 VRB3      30.04S

APPLETON       PTSUNNY   39  34  81 N8        30.04R

OSHKOSH        MOSUNNY   39  33  79 N8        30.03R

FOND DU LAC    MOSUNNY   39  35  86 N7        30.03S

$$



WIZ022-050-052-011500-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    35  25  66 N7        30.02S

WASHINGTON ISL CLOUDY    37  28  70 N8        30.03S

STURGEON BAY   CLOUDY    38  26  62 N8        30.04S

MANITOWOC      PTSUNNY   36  34  92 N5        30.05S

SHEBOYGAN      CLOUDY    39  33  79 NE13      30.04R

$$



LMZ563-521-522-541>543-011500-

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 1400   36      20/ 13/ 14 1017.7R

KEWAUNEE LKSHORE 1324           20/  2/  4 1016.7

NORTHPORT PIER   1300          300/ 11/ 14 1017.6

MENOMINEE LKSHOR 1324   36 50  310/  5/  6 1016.5

$$

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.