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.}

429
SXUS43 KGRB 151646
RECGRB
WIZ048-WIZ049-152100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
1146 AM CDT Thu Oct 15 2026

.THIS AFTERNOON...East winds around 10 knots. Rain likely late in
the morning, then rain in the afternoon. Waves 1 to 2 feet. Near
steady temperature in the mid 50s.
.TONIGHT...Northeast winds 5 to 20 knots becoming northwest 20 to
30 knots after midnight. Rain in the evening, then rain likely
after midnight. Waves 1 to 3 feet building to 3 to 6 feet after
midnight. Lows in the upper 40s.
.FRIDAY...North winds 20 to 25 knots. Rain likely in the morning,
then chance of rain in the afternoon. Waves 4 to 7 feet. Near
steady temperature in the upper 40s.
.FRIDAY NIGHT...North winds 10 to 25 knots backing northwest 5 to
15 knots after midnight. Mostly clear. Waves 3 to 5 feet. Lows in
the mid 30s.

$$

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

    
                        

981

ASUS43 KGRB 151712

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

1200 PM CDT THU OCT 15 2026



WIZ005-009-010>012-018-019-151800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    50  44  80 VRB3      30.06F

MANITOWISH WTR DRIZZLE   47  47 100 SE5       30.06F

ARBOR VITAE    LGT RAIN  46  45  93 SE6       30.06F

EAGLE RIVER    CLOUDY    47  47 100 SE5       30.08F

LAND O LAKES   RAIN      44  43  95 SE3       30.10F

RHINELANDER    CLOUDY    47  45  93 SE7       30.08F FOG

PHILLIPS       LGT RAIN  48  46  93 E5        30.04F

ANTIGO         CLOUDY    47  47 100 SE8       30.08F

TOMAHAWK       CLOUDY    47  45  91 SE7       30.07F

MERRILL        CLOUDY    50  46  86 SE6       30.05F

$$



WIZ013-073-151800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    48  46  93 SE5       30.10F FOG

MARINETTE      CLOUDY    54  46  74 SE15      30.11F

OCONTO         CLOUDY    54  45  72 SE8       30.10F

$$



WIZ017-030-035>037-045-151800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    50  49  99 E6        30.03F

WAUSAU         NOT AVBL

MOSINEE        LGT RAIN  50  48  93 E7        30.04F FOG

MARSHFIELD     RAIN      50  49  96 E8        30.03F

WISC RAPIDS    LGT RAIN  51  49  92 E8        30.03F FOG

STEVENS POINT  LGT RAIN  52  50  90 E9        30.06F

WAUPACA        RAIN      52  49  91 E3        30.10F

SHAWANO        LGT RAIN  55  49  81 SE5       30.10F

CLINTONVILLE   LGT RAIN  52  48  88 E6        30.09F

WAUTOMA        LGT RAIN  52  51  97 NE7       30.04F FOG

$$



WIZ038-039-048-051-151800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  LGT RAIN  54  48  80 E6        30.08F

APPLETON       DRIZZLE   55  52  88 E6        30.08F

OSHKOSH        RAIN      54  51  90 E8        30.06F FOG

FOND DU LAC    RAIN      54  52  93 NE3       30.06F

$$



WIZ022-050-052-151800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    52  43  71 E7        30.11F

WASHINGTON ISL CLOUDY    54  41  62 SE5       30.11F

STURGEON BAY   CLOUDY    53  46  77 SE6       30.12S

MANITOWOC      LGT RAIN  54  52  93 E5        30.09F

SHEBOYGAN      HVY RAIN  55  53  93 SE5       30.07F FOG

$$



LMZ563-521-522-541>543-151800-

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 1650   56     130/ 14/ 16 1018.4F

KEWAUNEE LKSHORE 1624          130/  3/  4 1019.1

NORTHPORT PIER   1600           90/  9/ 11 1021.3

N MID LAKE BUOY  1650   52 60  130/ 10/ 14 1020.0F         1/ 3

MENOMINEE LKSHOR 1624   53 62  110/ 13/ 16 1019.7

$$

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.