Grafton, Iowa gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grafton 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. The US average is 205 sunny days.
Grafton 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.
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
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Grafton is 6.6 (10=best), which means it is one of the least comfortable places in Iowa.
6.6 / 10
August, June and July are the most pleasant months in Grafton, while January and December are the least comfortable months.