Walnut, IA has a humid continental climate with warm and humid summers and cold, relatively dry winters. Average high temperatures in the summer months range from the mid-70s to mid-80s Fahrenheit, while average lows range from the mid-50s to the mid-60s. In winter, average temperatures range from the mid 20s to low 30s for highs and single digits for lows. The area receives between 28 and 34 inches of precipitation annually, with most occurring throughout spring and summer months.
Walnut, Iowa gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Walnut averages 29 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 218 sunny days per year in Walnut. The US average is 205 sunny days.
Walnut gets some kind of precipitation, on average, 99 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 85 degrees
Winter Low: the January low is 11
Rain: averages 35 inches of rain a year
Snow: averages 29 inches of snow a year