Caldwell, Idaho has a semi-arid climate with hot summers and cold winters. Summers are usually hot and dry with temperatures in the upper 80s and sometimes reaching 90 degrees Fahrenheit. During the winter months, temperatures can drop to below freezing and snowfall is common. The average annual precipitation for Caldwell is only about 11 inches, most of which falls from late fall to early spring. Winters tend to be wetter than summers, with more snowfall occurring during the colder months. Despite its arid nature, Caldwell can experience heavy rainfall at times from thunderstorms that originate in nearby mountain ranges, making it one of the rainiest areas in Idaho.
Caldwell, Idaho gets 11 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Caldwell averages 8 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 211 sunny days per year in Caldwell. The US average is 205 sunny days.
Caldwell gets some kind of precipitation, on average, 80 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 92 degrees
Winter Low: the January low is 23
Rain: averages 11 inches of rain a year
Snow: averages 8 inches of snow a year