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.}

916
SXUS43 KGRB 171417
RECGRB
WIZ048-WIZ049-172100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
917 AM CDT Sun May 17 2026

.TODAY...East winds 10 to 15 knots. Rain showers likely and
chance of thunderstorms. Waves 1 foot or less. Highs in the lower
60s.
.TONIGHT...East winds 10 to 15 knots veering south 15 to 20 knots
after midnight. Chance of thunderstorms in the evening. Chance of
showers and slight chance of thunderstorms after midnight. Waves
1 foot or less. Lows in the lower 60s.
.MONDAY...Southwest winds 15 to 20 knots. Chance of thunderstorms
through the day. Showers likely in the afternoon. Waves 1 foot or
less. Highs in the mid 70s.
.MONDAY NIGHT...South winds 10 to 20 knots. Showers likely in the
evening. Chance of thunderstorms through the night. Showers after
midnight. Waves 1 foot or less. Lows in the lower 60s.

$$

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

    
                        

711

ASUS43 KGRB 171410

RWRGRB



NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP

NATIONAL WEATHER SERVICE GREEN BAY WI

900 AM CDT SUN MAY 17 2026



WIZ005-009-010>012-018-019-171500-

NORTH CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRONWOOD       PTSUNNY   47  33  58 E8        30.02R

MANITOWISH WTR PTSUNNY   48  34  58 E8        29.99S

ARBOR VITAE    CLOUDY    47  34  60 SE9       29.99R

EAGLE RIVER    CLOUDY    48  33  55 E8        29.99F

LAND O LAKES   PTSUNNY   49  34  55 E9        30.02F

RHINELANDER    CLOUDY    48  34  58 E9        29.99R

PHILLIPS       CLOUDY    48  37  64 E8        29.96R

ANTIGO         CLOUDY    47  36  65 E9        29.99R

TOMAHAWK       CLOUDY    49  37  61 E7        29.97S

MERRILL        CLOUDY    50  34  53 E6        29.97R

$$



WIZ013-073-171500-

NORTHEAST WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

IRON MOUNTAIN  CLOUDY    50  36  58 NE8       30.01S

MARINETTE      CLOUDY    48  36  63 E15G23    30.01F

$$



WIZ017-030-035>037-045-171500-

CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

MEDFORD        CLOUDY    49  36  60 E8        29.95R

WAUSAU         LGT RAIN  49  39  68 E8        29.96R

MOSINEE        NOT AVBL

MARSHFIELD     CLOUDY    51  39  63 E15       29.91R

WISC RAPIDS    CLOUDY    53  39  59 E12G21    29.94R

STEVENS POINT  CLOUDY    52  39  62 E10       29.96R

WAUPACA        DRIZZLE   52  40  63 E6        30.02R

SHAWANO        CLOUDY    50  35  56 NE10      30.00R

CLINTONVILLE   CLOUDY    49  38  66 NE7       30.01R

WAUTOMA        LGT RAIN  51  44  77 E13       29.95R

$$



WIZ038-039-048-051-171500-

FOX VALLEY



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

NWS GREEN BAY  LGT RAIN  48  43  82 NE14      30.00R

APPLETON       LGT RAIN  52  43  71 E13G18    29.98R

OSHKOSH        CLOUDY    52  41  66 E13       29.97R

FOND DU LAC    LGT RAIN  51  43  74 E6        29.97R

$$



WIZ022-050-052-171500-

EAST CENTRAL WISCONSIN



CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS

EPHRAIM        CLOUDY    47  37  68 N9        29.98F

WASHINGTON ISL CLOUDY    46  38  73 NE9       30.01S

STURGEON BAY   CLOUDY    51  34  52 E14G20    30.00F

MANITOWOC      CLOUDY    47  38  71 NE8       30.00R

SHEBOYGAN      CLOUDY    48  40  73 NE14      29.98R

$$



LMZ563-521-522-541>543-171500-

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 1400   44      10/ 16/ 17 1015.1R

KEWAUNEE LKSHORE 1330           30/ 16/ 20 1014.6R

NORTHPORT PIER   1300           20/  7     1016.9

MENOMINEE LKSHOR 1330   44 55   30/ 17/ 20 1016.0F

$$

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.