The Great Northern Railway created Marion in 1891 as the terminus of a short spur line that ran west from Kalispell.[6] Between 1892 and 1902, this would be part of the Great Northern Main Line between Columbia Falls and Libby through Haskell Pass. The post office in Marion was established in 1892.
The railroad between Kalispell and Marion was abandoned in the 1940s. Part of it is now Great Northern Historical Trail.[7]
Climate
This climatic region is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters. According to the Köppen Climate Classification system, Marion has a humid continental climate, abbreviated "Dfb" on climate maps.[8]