CLIMATE OVERVIEW. Boise, Idaho, gets 12 inches of rain per year. The US average is 39. Snowfall is 31 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 41. On average, there are 206 sunny days per year in Boise, Idaho. read more
Most days of snowfall in Boise leave just a skiff, amounting to less than an inch of fresh snow on the ground. For seven days a year on average, the amount of new snow totals at least an inch. Heavy snowstorms are uncommon for Boise. read more
Average Annual Snowfall in Idaho The tables below give yearly averages for snowfall at cities, towns and parks in Idaho. The numbers are for the total amount of snow and for how many days it snows at least 0.1 inches (0.25 centimetres). read more