National Weather Service United States Department of Commerce

Thunderstorms, Some Severe, and Heavy Rainfall Across the East

A cold front moving into the eastern U.S. will bring widespread thunderstorms and locally heavy rain to the eastern states. Excessive rain will be possible across the Mid-South and widespread flash flooding will be possible. Severe thunderstorms with damaging winds may occur in the Mid-Atlantic and Northeast. Out west, windy, dry conditions are keeping fire weather threats elevated-to-critical. Read More >

Lake Winnebago Forecast                                       About these forecasts


Forecast Graphics


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Lake Winnebago Recreational Forecast
Note: Experimental product. Check product creation time to verify this is a current forecast.

332
SXUS43 KGRB 260821
RECGRB
WIZ048-WIZ049-262100-

Recreational Forecast for Lake Winnebago
National Weather Service Green Bay WI
321 AM CDT Wed Sep 26 2018

.EARLY THIS MORNING...West winds 10 to 15 knots. Partly cloudy.
Waves 1 to 3 feet. Near steady temperature in the upper 40s.
.TODAY...West winds 10 to 15 knots. Mostly sunny. Waves 1 to
3 feet. Highs in the lower 60s.
.TONIGHT...Southwest winds 10 to 15 knots. Mostly clear. Waves
1 to 2 feet. Lows in the upper 40s.
.THURSDAY...Southwest winds 10 to 20 knots. Chance of rain
showers in the afternoon. Waves 2 to 4 feet. Highs in the mid
60s.
.THURSDAY NIGHT...West winds 10 to 15 knots. Chance of rain
showers in the evening. Waves 1 to 3 feet. Lows in the mid 40s.

$$



 

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

000
ASUS43 KGRB 260911
RWRGRB

NORTH-CENTRAL AND NORTHEAST WISCONSIN REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE GREEN BAY WI
400 AM CDT WED SEP 26 2018

WIZ005-009-010>012-018-019-261000-
NORTH CENTRAL WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
IRONWOOD CLOUDY 44 42 93 W13 29.91S
MANITOWISH WTR CLOUDY 42 42 100 W7 29.91S
ARBOR VITAE CLOUDY 44 43 95 W5 29.91S
EAGLE RIVER CLOUDY 43 42 97 W5 29.90S
LAND O LAKES MOCLDY 43 39 87 NW7 29.90S
RHINELANDER MOCLDY 46 41 82 W8 29.92S
PHILLIPS CLOUDY 43 43 100 CALM 29.93F
ANTIGO CLOUDY 43 42 98 W8 29.93R
TOMAHAWK CLOUDY 43 40 90 W3 29.94S
MERRILL CLOUDY 45 43 93 W7 29.95S
$$

WIZ013-073-261000-
NORTHEAST WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
IRON MOUNTAIN CLOUDY 47 43 86 W6 29.86S
MARINETTE FAIR 48 46 93 W5 29.90R
OCONTO FAIR 47 44 91 W8 29.91R
$$

WIZ017-030-035>037-045-261000-
CENTRAL WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
MEDFORD CLOUDY 42 41 97 W6 29.95S
WAUSAU FAIR 45 42 89 W9 29.94S
MOSINEE FAIR 43 43 100 W8 29.96S
MARSHFIELD FAIR 43 43 100 W6 29.96S
WISC RAPIDS FAIR 45 42 89 W6 29.99S
STEVENS POINT CLOUDY 45 45 99 W6 29.97S
WAUPACA FAIR 47 46 95 SW6 29.97R
SHAWANO FAIR 47 44 88 W5 29.93R
CLINTONVILLE FAIR 46 43 88 W6 29.95R
WAUTOMA FAIR 45 44 97 W6 29.99R
$$

WIZ038-039-048-051-261000-
FOX VALLEY

CITY SKY/WX TMP DP RH WIND PRES REMARKS
NWS GREEN BAY FAIR 48 45 89 W10 29.93S
APPLETON FAIR 45 45 100 W9 29.94R
OSHKOSH FAIR 47 44 90 W3 29.96S
FOND DU LAC FAIR 47 44 90 W6 29.97S
$$

WIZ022-050-052-261000-
EAST CENTRAL WISCONSIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
EPHRAIM PTSUNNY 49 46 89 W12G21 29.87R
WASHINGTON ISL CLOUDY 51 47 86 NW9G16 29.86R
STURGEON BAY MOCLDY 51 46 83 W13G20 29.90R
MANITOWOC FAIR 49 44 83 W10 29.94R
SHEBOYGAN FAIR 50 43 77 W7 29.95R
$$

LMZ563-521-522-541>543-261000-
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 0900 52 300/ 11/ 14 1013.9R
KEWAUNEE LKSHORE 0848 50 290/ 5/ 9 1012.0R
NORTHPORT PIER 0840 53 300/ 7/ 10 1011.2S
N MID LAKE BUOY 0850 55 63 300/ 17/ 21 1010.1R 3/ 4
S GREEN BAY BUOY 0900 59 65 270/ 16/ 19 1012.6
CHAMBERS ISLAND 0840 52 240/ 6/ 15 1011.9R
MENOMINEE LKSHOR 0848 50 66 260/ 6/ 11 1011.9R
$$


 

Additional Data
Note: Check data times to verify information is current.

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 w-grb.webmaster@noaa.gov with any suggestions, comments or questions.