Regional Outbreaks of Severe Weather Through Early Next Week; Early Season Heat Wave across the South

Active spring pattern across the center of our nation with several episodes of severe weather and heavy rainfall expected into next week. The potential for very large hail, long track tornadoes, severe wind gusts, frequent cloud to ground lightning strikes and flash flooding are in the outlook. Furthermore, dangerous early season heat wave continues for the Gulf Coast states into early next week. 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.}

460
SXUS43 KGRB 230856
RECGRB
WIZ048-WIZ049-232100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
356 AM CDT Mon Jun 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.EARLY THIS MORNING...Southwest winds around 15 knots. Clear.
Waves 1 foot or less. Near steady temperature around 80.
.TODAY...Southwest winds around 15 knots. Chance of thunderstorms
in the afternoon. Waves 1 foot or less. Highs in the upper 80s.
.TONIGHT...Southwest winds 5 to 20 knots easing to 5 to 10 knots
after midnight. Patchy fog through the night. thunderstorms
likely in the evening. Showers likely and chance of thunderstorms
after midnight. Waves 1 foot or less. Lows in the lower 70s.
.TUESDAY...Northwest winds around 5 knots veering northeast in
the afternoon. Patchy fog in the morning. chance of thunderstorms
through the day. Waves less than 1 foot. Highs in the lower 70s.
.TUESDAY NIGHT...East winds 5 to 10 knots. Showers likely through
the night. Waves 1 foot or less. Lows in the lower 60s.

$$

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

    
                        

590

ASUS43 KGRB 231010

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

500 AM CDT MON JUN 23 2025



WIZ005-009-010>012-018-019-231100-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTCLDY    80  69  69 SW14G20   29.78R

MANITOWISH WTR CLOUDY    77  67  71 S13       29.84R

ARBOR VITAE    MOCLDY    77  68  74 SW9       29.86R

EAGLE RIVER    MOCLDY    77  65  67 SW10      29.86R

LAND O LAKES   PTCLDY    78  67  68 SW7G16    29.88R

RHINELANDER    NOT AVBL

PHILLIPS       MOCLDY    77  67  71 SW13G18   29.85R

ANTIGO         CLEAR     74  66  75 SW12      29.91R

TOMAHAWK       CLEAR     76  63  64 MISG      29.89R

MERRILL        NOT AVBL

$$



WIZ013-073-231100-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLEAR     74  72  93 SE6       29.84S

MARINETTE      CLEAR     78  71  79 SW9       29.88R

OCONTO         CLEAR     80  68  68 SW9G16    29.88R

$$



WIZ017-030-035>037-045-231100-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        MOCLDY    76  65  69 S10       29.89R

WAUSAU         NOT AVBL

MOSINEE        CLEAR     73  66  78 S9        29.90R

MARSHFIELD     CLEAR     75  66  73 SW8       29.90R

WISC RAPIDS    CLEAR     79  65  62 SW10      29.92R

STEVENS POINT  CLEAR     79  66  64 S9        29.92R

WAUPACA        CLEAR     78  67  69 S3        29.93R

SHAWANO        CLEAR     79  69  70 S5        29.90R

CLINTONVILLE   CLEAR     77  69  76 S8        29.92R

WAUTOMA        CLEAR     79  66  64 SW9       29.93R

$$



WIZ038-039-048-051-231100-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  CLEAR     79  69  71 S10       29.91R

APPLETON       CLEAR     79  70  73 SW10      29.94R

OSHKOSH        CLEAR     78  68  71 SW13      29.94R

FOND DU LAC    CLEAR     77  70  79 S14       29.96R

$$



WIZ022-050-052-231100-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLEAR     71  68  90 S5        29.89R

WASHINGTON ISL CLEAR     61  61 100 S8        29.88S

STURGEON BAY   CLEAR     79  70  74 SW13      29.91R

MANITOWOC      CLEAR     81  70  69 SW14      29.94R

SHEBOYGAN      NOT AVBL

$$



LMZ563-521-522-541>543-231100-

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 1000   75     200/ 13/ 16 1014.3R

KEWAUNEE LKSHORE 0924          180/  9/ 11 1011.6

NORTHPORT PIER   0900          110/  9/ 11   N/A

N MID LAKE BUOY  0940   57 51  190/ 17/ 21 1012.4R

S GREEN BAY BUOY 0930   72 66  210/ 10/ 12  991.4R         2/ 4

CHAMBERS ISLAND  0940   76     150/  9/ 18   N/A

MENOMINEE LKSHOR 0924   79 70  190/  8/ 11 1010.6

$$

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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