Areas of Heavy Rainfall and Critical Fire Weather on Wednesday

Heavy to excessive rainfall may bring flooding to parts of Arizona, New Mexico, Florida, North Carolina, and Virginia Wednesday. Recently burned areas will be particularly vulnerable to flash flooding. Gusty winds and low humidity will bring critical fire weather to parts of the Northwest U.S. and central Alaska on Wednesday where Red Flag Warnings are 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.}

198
SXUS43 KGRB 020624
RECGRB
WIZ048-WIZ049-020900-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
124 AM CDT Wed Jul 2 2025

.REST OF THE NIGHT...West winds 5 to 10 knots. Mostly clear.
Waves less than 1 foot. Near steady temperature in the upper 60s.
.WEDNESDAY...West winds 5 to 10 knots. Chance of thunderstorms in
the afternoon. Waves 1 foot or less. Highs in the lower 80s.
.WEDNESDAY NIGHT...West winds 5 to 10 knots. Slight chance of
thunderstorms in the evening. Waves less than 1 foot. Lows in the
upper 60s.
.THURSDAY...East winds up to 5 knots. Sunny. Waves less than
1 foot. Highs around 80.

$$

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

    
                        

667

ASUS43 KGRB 020659

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

200 AM CDT WED JUL 02 2025



WIZ005-009-010>012-018-019-020800-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTCLDY    64  57  78 SW7       29.92R

MANITOWISH WTR NOT AVBL

ARBOR VITAE    CLEAR     63  58  83 CALM      29.93S

EAGLE RIVER    CLEAR     59  59 100 SW5       29.92F

LAND O LAKES   PTCLDY    57  57 100 CALM      29.94S

RHINELANDER    NOT AVBL

PHILLIPS       PTCLDY    65  59  82 CALM      29.94S

ANTIGO         NOT AVBL

TOMAHAWK       NOT AVBL

MERRILL        NOT AVBL

$$



WIZ013-073-020800-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLEAR     68  59  73 W7        29.88S

MARINETTE      NOT AVBL

$$



WIZ017-030-035>037-045-020800-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLEAR     66  58  76 CALM      29.96S

WAUSAU         NOT AVBL

MOSINEE        CLEAR     61  59  94 W6        29.95S

MARSHFIELD     CLEAR     66  61  84 W6        29.96S

WISC RAPIDS    CLEAR     64  60  87 SW5       29.96S

STEVENS POINT  CLEAR     69  61  75 CALM      29.96S

WAUPACA        CLEAR     69  63  80 W5        29.94F

SHAWANO        CLEAR     69  60  73 SW3       29.92F

CLINTONVILLE   NOT AVBL

WAUTOMA        CLEAR     64  62  93 CALM      29.95F

$$



WIZ038-039-048-051-020800-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLEAR     69  61  75 W6        29.92S

APPLETON       CLEAR     70  63  78 W8        29.95S

OSHKOSH        CLEAR     70  62  76 VRB3      29.94S

FOND DU LAC    CLEAR     68  62  81 SW5       29.95S

$$



WIZ022-050-052-020800-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        NOT AVBL

WASHINGTON ISL NOT AVBL

STURGEON BAY   NOT AVBL

MANITOWOC      CLEAR     71  64  78 W6        29.93R

SHEBOYGAN      CLEAR     68  62  81 W8        29.95R

$$



LMZ563-521-522-541>543-020800-

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 0600   73     260/  9/ 10 1013.1R

KEWAUNEE LKSHORE 0618          290/  4/  5 1011.3

NORTHPORT PIER   0600          250/  5/  9   N/A

N MID LAKE BUOY  0640   62 58  240/  8/  8 1011.2S

S GREEN BAY BUOY 0600   72 70  270/  8/ 10  991.9          1

CHAMBERS ISLAND  0640   71     180/  6/ 11   N/A

MENOMINEE LKSHOR 0618      73  240/  7/ 10 1011.2

$$

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.

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