Learn about the weather in Boise throughout the year, including average temperatures, precipitation, and seasonal variations.
Boise has a semi-arid climate with four distinct seasons. Summers are hot and dry, with temperatures typically ranging from the upper 80s to mid-90s Fahrenheit (30-35 degrees Celsius). Winters are generally cold with occasional snowfall, and temperatures can drop below freezing, averaging in the 30s to 40s Fahrenheit (-1 to 4 degrees Celsius). Spring and fall bring mild temperatures, with highs in the 60s to 70s Fahrenheit (15-25 degrees Celsius). The city receives around 12 inches (30 cm) of precipitation annually, with most rainfall occurring in the spring and early summer.