About the Town of Plains
Plains is a town in Sanders County, Montana, United States. In the 1800s, the local American Indians wintered their horses to feed on the grasses in the local Clark Fork River valley. Founded in 1907 as Horse Plains, the town was first known as Wild Horse Plains. The town's name was shortened to Plains when the US Postal Service established a presence in 1905. The population was estimated to be 1,074 in 2016.
The Plains School District, located on a K-12 campus, enrolls about 400 students. The High School is a Class C school where students may participate in any of fourteen sports and extracurricular activities.
The summers are warm, dry, and mostly clear. The winters are cold and mostly cloudy. Over the course of the year, temperatures vary from 21°F to 85°F. Rarely are temperatures below 4°F or above 93°F. Yearly participation averages 12 inches with 2 inches in June and 0.5 inches in December.