Troy, Idaho has a continental climate with cold and snowy winters and warm summers. The average winter temperature is around 35°F while the summertime averages around 78°F. Precipitation is relatively low throughout the year, though heavy snowfall accumulates in the mountains during winter months. Spring and autumn tend to be mild but often bring strong winds and thunderstorms. Troy's location in the middle of a valley provides hot dry days in the summer as well as cooler temperatures than surrounding areas with more protection from wind.
Troy, Idaho gets 24 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Troy averages 43 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 168 sunny days per year in Troy. The US average is 205 sunny days.
Troy gets some kind of precipitation, on average, 115 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 25
Rain: averages 24 inches of rain a year
Snow: averages 43 inches of snow a year