Heavy Rainfall in the East Wednesday; Hot Temperatures Continue in Coastal Southern California

Heavy to excessive rainfall may lead to flooding Wednesday over southwest Pennsylvania into northern West Virginia, and western Maryland. Flood Watches have been issued. An extended period of hot weather will continue for parts of coastal southern California including Los Angeles through Thursday. Heat Advisories remain in effect. Read More >

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.}

316
SXUS43 KGRB 210207
RECGRB
WIZ048-WIZ049-210315-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
907 PM CDT Tue May 20 2025

.TONIGHT...East winds 15 to 20 knots. Chance of rain showers late
in the evening, then rain showers likely after midnight. Waves
2 to 4 feet. Near steady temperature in the mid 40s.
.WEDNESDAY...Northeast winds 10 to 15 knots. Rain showers in the
morning, then rain showers likely in the afternoon. Waves 1 to
3 feet. Highs around 50.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Chance of rain
showers in the evening. Waves 1 foot or less. Near steady
temperature in the upper 40s.
.THURSDAY...North winds 10 to 15 knots. Partly sunny. Waves
1 foot or less. Highs in the mid 50s.

$$

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

    
                        

624

ASUS43 KGRB 210211

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

900 PM CDT TUE MAY 20 2025



WIZ005-009-010>012-018-019-210300-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       CLOUDY    45  35  68 E9        29.89S

MANITOWISH WTR CLOUDY    48  31  51 E12G23    29.88R

ARBOR VITAE    CLOUDY    47  32  54 E14G28    29.87S

EAGLE RIVER    DRIZZLE   46  32  58 E14       29.89F

LAND O LAKES   LGT RAIN  45  31  56 SE10      29.93S

RHINELANDER    CLOUDY    45  34  65 E14G26    29.87S

PHILLIPS       CLOUDY    44  36  73 E12G20    29.83F

ANTIGO         CLOUDY    42  37  84 E21G30    29.87S

TOMAHAWK       CLOUDY    45  34  66 MISG      29.87R

MERRILL        NOT AVBL

$$



WIZ013-073-210300-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    50  27  40 E8        29.91S

MARINETTE      LGT RAIN  45  42  89 E8        29.93S

OCONTO         CLOUDY    45  44  98 E12G22    29.90R

$$



WIZ017-030-035>037-045-210300-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    43  37  79 E10G22    29.81S

WAUSAU         CLOUDY    44  38  79 E13G22    29.84R

MOSINEE        CLOUDY    43  39  87 E15G22    29.83R

MARSHFIELD     LGT RAIN  43  40  89 E13       29.81R

WISC RAPIDS    RAIN      44  42  93 E12G21    29.82R FOG

STEVENS POINT  CLOUDY    45  41  84 E16       29.84R

WAUPACA        CLOUDY    47  41  80 E13G18    29.85R

SHAWANO        CLOUDY    47  42  83 E15G21    29.89R

CLINTONVILLE   CLOUDY    45  42  88 E10       29.88S

WAUTOMA        LGT RAIN  44  43  96 NE10      29.82R

$$



WIZ038-039-048-051-210300-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLOUDY    45  41  86 NE15G23   29.88R

APPLETON       CLOUDY    46  43  87 E16       29.85

OSHKOSH        CLOUDY    45  41  86 E16G24    29.82R

FOND DU LAC    CLOUDY    44  42  93 E14G24    29.81S

$$



WIZ022-050-052-210300-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        LGT RAIN  40  39  95 E3        29.91F

WASHINGTON ISL MOCLDY    47  31  53 E8G17     29.92F

STURGEON BAY   LGT RAIN  43  41  93 E7        29.92R

MANITOWOC      LGT RAIN  44  42  93 E13       29.86S

SHEBOYGAN      LGT RAIN  42  41  96 NE20G29   29.83S FOG

$$



LMZ563-521-522-541>543-210300-

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 0200   43      40/ 19/ 21 1010.1R

KEWAUNEE LKSHORE 0130   43      50/ 13/ 17 1010.7R

NORTHPORT PIER   0100           40/ 16/ 21   N/A

N MID LAKE BUOY  0140   42 38   80/ 12/ 14 1014.2F

S GREEN BAY BUOY 0130   47 54  120/ 21/ 25  991.8R         2/ 4

CHAMBERS ISLAND  0140   46      30/  9/ 13   N/A

MENOMINEE LKSHOR 0130   45 62   60/ 12/ 13 1012.5F

$$

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.

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