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.}

958
SXUS43 KGRB 040657
RECGRB
WIZ048-WIZ049-040900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
156 AM CDT Sat Apr 4 2026

.REST OF THE NIGHT...East winds around 15 knots. Rain and chance
of thunderstorms. Waves 1 to 3 feet. Near steady temperature in
the mid 30s.
.SATURDAY...Southeast winds 5 to 15 knots veering west 10 to
20 knots in the afternoon. Chance of rain and slight chance of
thunderstorms in the morning. Waves 1 to 3 feet. Highs in the mid
40s.
.SATURDAY NIGHT...West winds 15 to 20 knots. Slight chance of
rain in the evening. Waves 1 to 3 feet building to 2 to 4 feet
after midnight. Lows around 30.
.SUNDAY...Northwest winds 10 to 20 knots. Partly sunny in the
morning then clearing. Waves 2 to 4 feet subsiding to 1 to 3 feet
in the afternoon. Highs in the mid 40s.

$$

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

    
                        

429

ASUS43 KGRB 040710

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 AM CDT SAT APR 04 2026



WIZ005-009-010>012-018-019-040800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       FLURRIES  30  28  92 E9        30.07

MANITOWISH WTR LGT SNOW  31  31 100 E8        30.01F

ARBOR VITAE    LGT SNOW  31  30  96 E7        30.02F

EAGLE RIVER    LGT SNOW  31  31 100 E6        30.05S

LAND O LAKES   LGT SNOW  31  30  93 SE9       30.08S

RHINELANDER    FRZ RAIN  31  30  96 E17       29.99F FOG

PHILLIPS       MIX PCPN  31  31  99 E5        30.00F

ANTIGO         MIX PCPN  30  29  96 E14       30.05F

TOMAHAWK       CLOUDY    32  31  96 MISG      29.98F

MERRILL        CLOUDY    32  30  93 CALM      30.00F

$$



WIZ013-073-040800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  FRZ RAIN  32  31  96 E10G24    30.10F FOG

MARINETTE      MIX PCPN  32  32 100 E15G21    30.12F

OCONTO           N/A     32  32  99 NE6       30.10F

$$



WIZ017-030-035>037-045-040800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    32  31  98 CALM      29.96F

WAUSAU         FRZ RAIN  32  30  92 E10G20    30.00F FOG

MOSINEE        LGT SNOW  32  30  93 E18       29.98F FOG

MARSHFIELD     FRZ RAIN  32  30  92 E15G28    29.95F

WISC RAPIDS    MIX PCPN  32  30  92 E13G22    29.99F FOG

STEVENS POINT  MIX PCPN  33  32  94 E8        30.01F

WAUPACA        LGT SNOW  34  32  93 NE9       30.09R

SHAWANO        RAIN      34  31  90 CALM      30.09F

CLINTONVILLE   NOT AVBL

WAUTOMA        LGT SNOW  32  30  93 E14       29.99  FOG

$$



WIZ038-039-048-051-040800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  MIX PCPN  32  31  96 NE14      30.11R FOG

APPLETON       TSTM      34  32  93 NE17      30.03F

OSHKOSH        MIX PCPN  34  32  92 NE18G28   30.00F

FOND DU LAC    CLOUDY    34  33  96 NE20      29.99F

$$



WIZ022-050-052-040800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        MIX PCPN  31  30  96 E12       30.10F

WASHINGTON ISL MIX PCPN  33  32  96 E8        30.14F

STURGEON BAY   LGT SNOW  32  31  96 E13G20    30.07F FOG

MANITOWOC      LGT RAIN  33  33 100 NE9G18    30.06F

SHEBOYGAN      CLOUDY    34  32  92 E13G24    30.04F

$$



LMZ563-521-522-541>543-040800-

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 0700   34      50/ 17/ 19 1017.7R

KEWAUNEE LKSHORE 0624   34      50/ 15/ 21 1018.9

NORTHPORT PIER   0600   33      70/ 13/ 19   N/A

MENOMINEE LKSHOR 0624   32 36   30/ 14/ 15 1020.0

$$

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.