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The mountains are gorgeous and the weather is wonderful. With 11.37 average annual inches precipitation and 47.6 average annual inches snow, Helena is a great place for downhill and cross-country skiing as well as other snow sports. Indeed, skiing is always in season as there is snow on the mountains even in the summer.
Helena has a modified continental climate with warm, dry summers and moderately cold winters. Mountains located to the north and east of the city sometimes deflect shallow masses of arctic air to the east, but at other times cold air can be trapped in the valley for days. During the coldest period, from November through February, temperatures sometimes drop to 0° F or below. Summer temperatures are usually under 90° F and the mountains account for marked changes in temperature from day to night. April through July is the rainy season, while late summer, fall, and winter are quite dry.