Westby is located in Montana. Westby, Montana has a population of 147. Westby is more family-centric than the surrounding county with 43.59% of the households containing married families with children. The county average for households married with children is 28.31%.
The median household income in Westby, Montana is $41,875. The median household income for the surrounding county is $51,940 compared to the national median of $57,652. The median age of people living in Westby is 41.8 years.
The average high temperature in July is 80.2 degrees, with an average low temperature in January of -2.5 degrees. The average rainfall is approximately 13.7 inches per year, with 17.9 inches of snow per year.