Grafton, IA is known for its mild climate, with an average temperature of around 51°F. The region experiences warm summers and cold winters, with the coldest months usually occurring between December and February. Snowfall is common in the winter months, but usually melts quickly due to the mild temperatures in the area. Precipitation is more common in spring and summer months, with July being the wettest month. The area generally receives an average of 33 inches of precipitation per year.
Grafton (zip 50440), Iowa gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grafton (zip 50440) averages 39 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 184 sunny days per year in Grafton (zip 50440). The US average is 205 sunny days.
Grafton (zip 50440) gets some kind of precipitation, on average, 94 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 82 degrees
Winter Low: the January low is 6
Rain: averages 35 inches of rain a year
Snow: averages 39 inches of snow a year