Garnavillo, IA has a humid continental climate with hot, humid summers and cold winters. The average temperature in July is 73°F (23°C) while the average temperature in January is 21°F (-6°C). There is a moderate amount of precipitation throughout the year, with an average of 28 inches (71 cm) annually. Snowfall accumulations can reach up to 20 inches (51 cm) during the winter months.
Garnavillo, Iowa gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Garnavillo averages 35 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 188 sunny days per year in Garnavillo. The US average is 205 sunny days.
Garnavillo gets some kind of precipitation, on average, 108 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 83 degrees
Winter Low: the January low is 9
Rain: averages 35 inches of rain a year
Snow: averages 35 inches of snow a year