THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 563 IN EFFECT UNTIL 2 PM CDT /3 PM EDT/ THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 18 COUNTIES IN CENTRAL ILLINOIS LIVINGSTON IN EAST CENTRAL ILLINOIS FORD IROQUOIS IN NORTH CENTRAL ILLINOIS BOONE DE KALB LA SALLE LEE OGLE WINNEBAGO IN NORTHEAST ILLINOIS COOK DUPAGE GRUNDY KANE KANKAKEE KENDALL LAKE IL MCHENRY WILL IN INDIANA THIS WATCH INCLUDES 5 COUNTIES IN NORTHWEST INDIANA BENTON JASPER LAKE IN NEWTON PORTER THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BOLINGBROOK, BOURBONNAIS, BUFFALO GROVE, BYRON, CAROL STREAM, CHESTERTON, CHICAGO, COAL CITY, CRYSTAL LAKE, DEKALB, DEMOTTE, DIXON, DOWNERS GROVE, DWIGHT, ELGIN, EVANSTON, FAIRBURY, FOWLER, GARY, GIBSON CITY, GILMAN, GURNEE, HAMMOND, JOLIET, KANKAKEE, KENTLAND, LA SALLE, LEMONT, LOMBARD, MARSEILLES, MCHENRY, MENDOTA, MERRILLVILLE, MINOOKA, MOROCCO, MORRIS, MUNDELEIN, NAPERVILLE, OAK LAWN, OREGON, ORLAND PARK, OSWEGO, OTTAWA, OXFORD, PARK FOREST, PAXTON, PLANO, PONTIAC, PORTAGE, RENSSELAER, ROCHELLE, ROCKFORD, ROSELAWN, SCHAUMBURG, STREATOR, SYCAMORE, VALPARAISO, WATSEKA, WAUKEGAN, WHEATON, WILMINGTON, WOODSTOCK, AND YORKVILLE.
Weather in Lake Geneva, WI
Updated 2026-08-11 12:00 local time · ZIP codes 53147
Overcast
Active alerts
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Boone County in north central Illinois... De Kalb County in north central Illinois... Northern La Salle County in north central Illinois... Lee County in north central Illinois... Ogle County in north central Illinois... Southern Winnebago County in north central Illinois... * WHEN...Until 130 PM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 931 AM CDT, Doppler radar and automated rain gauges indicated a line of intense thunderstorms with rainfall rates of 2 to 3 inches per hour moving through the area. Localized flooding of roadways and poor drainage areas will occur shortly after the onset of rainfall. - Some locations that will experience flooding include... Rockford, DeKalb, Belvidere, Loves Park, Machesney Park, Ottawa, Sycamore, Dixon, Rochelle, Sandwich, Mendota, Poplar Grove, Genoa, Byron, Oregon, Mount Morris, Amboy, Polo and Sheridan. - http://www.weather.gov/safety/flood
Safety instructions
A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters.
Next hours
69°28% rain
77°48% rain
76°12% rain78°12% rain78°9% rain78°10% rain77°9% rain79°10% rain73°11% rain
72°13% rain
71°15% rain70°15% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
There is a moderate rain chance, peaking near 48%.
It feels like 69°F with winds near 4 mph.
73°F, 11% rain chance and 3 mph wind.
Visibility is around 2 mi; gusts may reach 18 mph.
Current temperature is 69°F, wind 4 mph, rain chance up to 48%.
UV index is 3. Sunscreen and sunglasses are sensible for longer outdoor time.
Lake Geneva weather today
Overcast and 69°F in Lake Geneva, WI. Today's high is 79°F with a 79% rain chance. Winds are around 4 mph with gusts near 8 mph. Relative humidity is 94%, pressure is 29.96 inHg, and visibility is about 2 miles.
Tonight and tomorrow in Lake Geneva
Sunrise is at 05:56 AM and sunset is at 08:01 PM. Tomorrow's forecast calls for Mist with a high near 83°F and a low near 67°F. The maximum rain chance is 78%.