Hailey has a pleasant Rocky mountain climate. Average temperatures in January are 18 degrees for a low and 31 for a high. Rain and snow come in January, February and December. Low Humidity marks the summer months thru October. And as Ernest Hermingway said of our area "the fall is the best!". Days of clear skies are June thru October. Snow accumulates in January, February, March and December averaging about 7" a month. Check out the latest weather on our homepage from the Weather Channel.