Swansea, IL has a humid continental climate with cold, snowy winters and hot, humid summers. Winters usually last from mid-November to early March, with temperatures averaging in the low 30s °F. Snowfall averages around 20 inches per year. Summers are generally warm and wet, with average highs in the upper 80s °F and average lows in the mid 60s°F. The area receives an average of 43 inches of precipitation per year, resulting in plentiful vegetation throughout the summer months.
Swansea (zip 62226), Illinois gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Swansea (zip 62226) averages 13 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Swansea (zip 62226). The US average is 205 sunny days.
Swansea (zip 62226) gets some kind of precipitation, on average, 100 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 89 degrees
Winter Low: the January low is 22
Rain: averages 42 inches of rain a year
Snow: averages 13 inches of snow a year