51537 Harlan, IA has a humid continental climate with warm, humid summers and cold winters. The average temperature for the year is around 47 degrees Fahrenheit (8 degrees Celsius), with an average high of 68 degrees (20 degrees Celsius) in the summer and an average low of 25 degrees (-4 degrees Celsius) in the winter months. Precipitation is fairly consistent year-round, with some snow in late winter or early spring. The city does experience occasional thunderstorms, especially during the summer months.
Harlan (zip 51537), Iowa gets 34 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Harlan (zip 51537) averages 28 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 215 sunny days per year in Harlan (zip 51537). The US average is 205 sunny days.
Harlan (zip 51537) gets some kind of precipitation, on average, 95 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 84 degrees
Winter Low: the January low is 10
Rain: averages 34 inches of rain a year
Snow: averages 28 inches of snow a year