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.}

250
SXUS43 KGRB 192052
RECGRB
WIZ048-WIZ049-200900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
351 PM CDT Sun Apr 19 2026

.REST OF THE AFTERNOON...Northwest winds 10 to 20 knots. Partly
sunny. Waves less than 1 foot. Near steady temperature in the mid
40s.
.TONIGHT...North winds 5 to 10 knots veering northeast after
midnight. Mostly cloudy in the evening then clearing. Waves less
than 1 foot. Lows in the mid 20s.
.MONDAY...South winds 5 to 10 knots. Sunny. Waves less than
1 foot. Highs in the upper 40s.
.MONDAY NIGHT...South winds 10 to 15 knots. Partly cloudy. Waves
less than 1 foot. Lows in the upper 30s.
.TUESDAY...West winds 5 to 10 knots. Sunny. Waves less than
1 foot. Highs in the mid 60s.

$$

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

    
                        

545

ASUS43 KGRB 192210

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

500 PM CDT SUN APR 19 2026



WIZ005-009-010>012-018-019-192300-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       SUNNY     35  11  36 NW9       30.20R

MANITOWISH WTR SUNNY     35   6  28 NW12G22   30.16R

ARBOR VITAE    SUNNY     37   9  31 N18G25    30.15R

EAGLE RIVER    SUNNY     36   4  25 NW14G24   30.14R

LAND O LAKES   SUNNY     34   7  31 NW8G20    30.17R

RHINELANDER    SUNNY     37   9  31 N8G20     30.14R

PHILLIPS       PTSUNNY   38  12  34 N10G18    30.15R

ANTIGO         PTSUNNY   40  15  35 NW16      30.13R

TOMAHAWK       PTSUNNY   40   9  27 MISG      30.15R

MERRILL        NOT AVBL

$$



WIZ013-073-192300-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   38  13  35 NW14G26   30.12R

MARINETTE      CLOUDY    41  14  33 NW8       30.15R

OCONTO         CLOUDY    43  13  30 NW12      30.14R

$$



WIZ017-030-035>037-045-192300-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        MOSUNNY   40  13  32 NW12G17   30.14R

WAUSAU         CLOUDY    41  11  29 W13G23    30.14R

MOSINEE        MOSUNNY   41  16  36 NW9G17    30.14R

MARSHFIELD     PTSUNNY   41  18  39 NW16      30.15R

WISC RAPIDS    MOSUNNY   43  10  26 N16G25    30.16R

STEVENS POINT  PTSUNNY   44  13  29 NW9       30.15R

WAUPACA        PTSUNNY   46  11  24 W12       30.17R

SHAWANO        CLOUDY    44  10  24 NW12G17   30.14R

CLINTONVILLE   CLOUDY    43  13  28 NW14      30.15R

WAUTOMA        MOSUNNY   44  13  28 NW14G21     N/A

$$



WIZ038-039-048-051-192300-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    43  19  38 NW14G23   30.13R

APPLETON       PTSUNNY   45  16  31 NW14      30.13R

OSHKOSH        CLOUDY    44  17  33 NW14      30.13R

FOND DU LAC    CLOUDY    44  18  35 NW14G25   30.13R

$$



WIZ022-050-052-192300-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    37  14  39 N5        30.14R

WASHINGTON ISL CLOUDY    37  21  52 N13       30.15R

STURGEON BAY   CLOUDY    38  24  57 S7        30.16R

MANITOWOC      PTSUNNY   36  28  73 SE9       30.16R

SHEBOYGAN      CLOUDY    38  27  64 E9        30.14R

$$



LMZ563-521-522-541>543-192300-

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 2200   35      80/ 14/ 15 1021.1R

KEWAUNEE LKSHORE 2124          130/  6/  8 1020.3

NORTHPORT PIER   2100          300/  2/  4 1021.0

MENOMINEE LKSHOR 2124   37 43  330/  9/ 12 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.