51103 Sioux City, IA has a Humid Continental climate with hot and humid summers and cold, dry winters. The area experiences an average of 34 inches of precipitation annually, with a majority of this occurring during the months of May through August. During these months, temperatures can reach up to 90°F or more. Winters are typically very cold with temperatures averaging between 20-30°F. Snowfall is common in the winter months, with an average of 28 inches annually.
Sioux City (zip 51103), Iowa gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sioux City (zip 51103) averages 32 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 208 sunny days per year in Sioux City (zip 51103). The US average is 205 sunny days.
Sioux City (zip 51103) gets some kind of precipitation, on average, 84 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 86 degrees
Winter Low: the January low is 10
Rain: averages 30 inches of rain a year
Snow: averages 32 inches of snow a year