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.}

553
SXUS43 KGRB 192231
RECGRB
WIZ048-WIZ049-200900-

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

.REST OF THE AFTERNOON...Northwest winds 10 to 15 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.}

    
                        

788

ASUS43 KGRB 192310

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

600 PM CDT SUN APR 19 2026



WIZ005-009-010>012-018-019-200000-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       SUNNY     34  10  37 N9        30.20S

MANITOWISH WTR SUNNY     35   7  31 NW9       30.16S

ARBOR VITAE    SUNNY     36   8  30 N14G22    30.16R

EAGLE RIVER    SUNNY     35   2  25 NW13G21   30.16R

LAND O LAKES   SUNNY     34   5  29 NW14      30.19R

RHINELANDER    SUNNY     37   9  31 N8        30.16R

PHILLIPS       PTSUNNY   37  11  34 N7        30.16R

ANTIGO         PTSUNNY   39  14  35 NW16G23   30.15R

TOMAHAWK       MOSUNNY   40   9  28 MISG      30.16S

MERRILL        NOT AVBL

$$



WIZ013-073-200000-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  MOSUNNY   37  13  37 N16G25    30.14R

MARINETTE      CLOUDY    41  14  33 NE8       30.16R

OCONTO         CLOUDY    41  11  28 NW5       30.15R

$$



WIZ017-030-035>037-045-200000-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        PTSUNNY   40  13  32 NW12      30.15S

WAUSAU         CLOUDY    42  11  28 NW8G20    30.15R

MOSINEE        CLOUDY    41  12  30 NW16      30.15R

MARSHFIELD     PTSUNNY   41  16  36 NW13      30.17R

WISC RAPIDS    MOSUNNY   43  12  28 N13G23    30.17R

STEVENS POINT  MOSUNNY   43  12  28 NW10      30.16S

WAUPACA        PTSUNNY   47  11  24 W12G20    30.19R

SHAWANO        CLOUDY    44   9  23 N12G18    30.15R

CLINTONVILLE   CLOUDY    44  13  29 NW15      30.17R

WAUTOMA        MOSUNNY   45  14  28 NW15      30.17

$$



WIZ038-039-048-051-200000-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    43  19  38 NW10G23   30.15R

APPLETON       PTSUNNY   45  18  33 NW10      30.15R

OSHKOSH        CLOUDY    45  18  34 NW14G25   30.14R

FOND DU LAC    PTSUNNY   44  18  35 NW15      30.15R

$$



WIZ022-050-052-200000-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        PTSUNNY   36  14  40 N5        30.15R

WASHINGTON ISL PTSUNNY   37  18  47 N13       30.17R

STURGEON BAY   CLOUDY    36  23  59 SE7       30.17R

MANITOWOC      PTSUNNY   36  27  69 E8        30.18R

SHEBOYGAN      CLOUDY    37  27  67 E7        30.16R

$$



LMZ563-521-522-541>543-200000-

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 2300   35      80/ 11/ 12 1021.9R

KEWAUNEE LKSHORE 2224          120/  7/  8 1021.0

NORTHPORT PIER   2200          320/ 13/ 16 1021.7

MENOMINEE LKSHOR 2224   41 43  270/  9/ 17 1020.2

$$

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.