Early in the Autumn season, high daily temperatures average 70 degrees. Indian summer can linger until the middle of October. During the months of October and November the temperatures generally reach highs in the 40s and 50s and lows in the 20s or 30s.

Winters in Bozeman are characterized by fluctuating temperatures. Mild winter weather is not unusual and a week or more of consistently cold weather is rare. For the winter sports enthusiast, the relatively low humidity (averages around 58.9) and light winds provide an ideal climate for outdoor winter activities. Downhill ski season usually extends from mid December to the beginning of April.

• Big Sky Ski Area
• Bridger Bowl Ski Area

• Weather and Road Conditions

Spring tends to come late in the Gallatin Valley, with high average temperatures in April, May and June of 53, 63 and 72 respectively. One third of the annual precipitation of 18.61 inches falls during May and June.

The average annual mean snowfall in Bozeman is 73.1 inches and the average length of the growing season is 107 days. The first killing frost usually occurs about September 12th.