Arco, Idaho has a semi-arid climate with hot and dry summers and cold winters. Average summer temperatures range from the mid-80s Fahrenheit during the day to around 50°F at night. In the winter, temperatures drop to the low 20s during the day and dip into single digits at night. Precipitation is sparse, with an annual average of just over 12 inches. Much of this precipitation falls in the form of snow in the winter months with an average of around 65 inches per year. This arid climate creates a unique environment for outdoor activities, such as skiing, hunting, fishing, biking, and hiking.
Arco, Idaho gets 11 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Arco averages 44 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 200 sunny days per year in Arco. The US average is 205 sunny days.
Arco gets some kind of precipitation, on average, 60 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 6
Rain: averages 11 inches of rain a year
Snow: averages 44 inches of snow a year