Temperature in Williams Bay, Wisconsin, USA United States of America Check the temperature anywhere in the worldCheck Temperature69.8°F21.0°CSunnyFeels like 66.9°FWeather observation: 2026-10-22 14:30 (local time)What's the Average Temperature in Williams Bay, Wisconsin, USA United States of America?Check the average temperature this time of year →Explore by seasonSpring →Summer →Autumn →Winter →Select a monthMonth JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember View average →