Sussex, WI has a moderate climate with warm summers and cold winters. The average temperature in the summer is around 75°F and the average temperature in the winter is around 25°F. The area receives an average of 35 inches of rainfall per year, mainly during the warmer months. There are also occasional snow showers throughout the winter season that bring an occasional dusting of snow to Sussex. Despite Wisconsin's reputation for cold winters, this area stays relatively mild due to its proximity to Lake Michigan which helps keep temperatures milder than other regions of Wisconsin.
Sussex, Wisconsin gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sussex averages 41 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 193 sunny days per year in Sussex. The US average is 205 sunny days.
Sussex gets some kind of precipitation, on average, 116 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 81 degrees
Winter Low: the January low is 10
Rain: averages 35 inches of rain a year
Snow: averages 41 inches of snow a year