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.}

663
SXUS43 KGRB 140343
RECGRB
WIZ048-WIZ049-140445-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
1042 PM CDT Mon Apr 13 2026

...FLOOD WATCH IN EFFECT UNTIL 7 AM CDT TUESDAY...
...SEVERE THUNDERSTORM WATCH 106 IN EFFECT UNTIL 4 AM CDT
TUESDAY...

.TONIGHT...South winds around 10 knots. Patchy fog through the
night. rain showers with thunderstorms likely late in the
evening. Thunderstorms after midnight. Waves 1 foot or less. Near
steady temperature in the mid 50s.
.TUESDAY...West winds 5 to 10 knots backing east in the
afternoon. Patchy fog in the morning. chance of thunderstorms in
the afternoon. Waves 1 foot or less. Highs in the upper 60s.
.TUESDAY NIGHT...East winds 5 to 10 knots backing north after
midnight. Rain showers likely and chance of thunderstorms in the
evening, then chance of rain after midnight. Waves less than
1 foot. Lows in the upper 40s.
.WEDNESDAY...East winds around 5 knots. Chance of rain and
thunderstorms in the afternoon. Waves less than 1 foot. Highs in
the mid 50s.

$$

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

    
                        

928

ASUS43 KGRB 140512

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

1200 AM CDT TUE APR 14 2026



WIZ005-009-010>012-018-019-140600-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    43  43 100 NE5       29.76F

MANITOWISH WTR FOG       46  46 100 CALM      29.73F VSB 1

ARBOR VITAE    CLOUDY    52  52  99 CALM      29.71F

EAGLE RIVER    CLOUDY    50  50 100 E6        29.71F FOG

LAND O LAKES   FOG       47  47 100 N5        29.76R VSB 3/4

RHINELANDER    CLOUDY    53  52  96 SE7       29.71S

PHILLIPS       CLOUDY    50  50 100 N6        29.71R

ANTIGO         LGT RAIN  49  49 100 W7        29.75R

TOMAHAWK       CLOUDY    54  53  95 MISG      29.73R

MERRILL        NOT AVBL

$$



WIZ013-073-140600-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    46  46 100 NE5       29.74F

MARINETTE      TSTM      47  47 100 CALM      29.79R FOG

OCONTO         CLOUDY    48  48  99 CALM      29.79R

$$



WIZ017-030-035>037-045-140600-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    55  55  97 SE9       29.74R

WAUSAU         HVY RAIN  54  53  97 VRB5      29.74R FOG

MOSINEE        TSTM      54  54 100 SW5       29.75R

MARSHFIELD     RAIN      56  55  97 S7        29.76R FOG

WISC RAPIDS    RAIN      56  55  97 N5        29.77R FOG

STEVENS POINT  TSTM      55  54  96 CALM      29.76R

WAUPACA        HVY RAIN  55  53  94 NE5       29.77S

SHAWANO        TSTM      51  51 100 E8        29.76F

CLINTONVILLE   RAIN      50  49  97 NE9       29.75F

WAUTOMA        TSTM      57  55  93 N12       29.71R

$$



WIZ038-039-048-051-140600-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  RAIN      49  49 100 NE7       29.79R FOG

APPLETON       TSTM      54  54 100 NE10G17   29.74F

OSHKOSH        HVY RAIN  55  54  96 NE18G25   29.72R FOG

FOND DU LAC    TSTM      57  55  93 N21G31    29.71F

$$



WIZ022-050-052-140600-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        RAIN      45  44  97 E10       29.74F

WASHINGTON ISL RAIN      46  45  95 E13       29.72F

STURGEON BAY   HVY RAIN  52  51  97 E9        29.77R

MANITOWOC      TSTM      53  53 100 N13       29.78R FOG

SHEBOYGAN      TSTM      54  53  97 NE12G28   29.73  VSB 3/4

$$



LMZ563-521-522-541>543-140600-

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 0500   45      10/ 21/ 27 1006.4R

KEWAUNEE LKSHORE 0424           50/  8/ 15 1007.6

NORTHPORT PIER   0400          120/  6/  9 1010.5

MENOMINEE LKSHOR 0424   43 40   30/ 13/ 32 1006.5

$$

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.