Johnston, IA is located in central Iowa and experiences a humid continental climate. This means that during the summer months, temperatures can reach as high as 90 degrees Fahrenheit, making it a popular destination for outdoor activities. The winters are generally cold, with temperatures dropping below freezing at night. Precipitation is seen throughout the year, usually in the form of rain and occasional snowfall during the winter months. The average humidity levels remain fairly consistent throughout the year. Overall, Johnston offers pleasant weather all year round to its residents and visitors alike.
Johnston (zip 50131), Iowa gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Johnston (zip 50131) averages 34 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 Johnston (zip 50131). The US average is 205 sunny days.
Johnston (zip 50131) gets some kind of precipitation, on average, 109 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 13
Rain: averages 36 inches of rain a year
Snow: averages 34 inches of snow a year