Montague is a city in Siskiyou County, California, United States.

When the Southern Pacific Railroad extension was built from Dunsmuir, California to the state line in 1886–87, the station was named for S.S. Montague, chief engineer of the Central Pacific Railroad.

[5] According to the United States Census Bureau, the city has a total area of 1.8 square miles (4.6 km2), 99.15% of it land and 0.85% of it water.

Located 6 miles east of Interstate 5 at Yreka along California State Route 3, this is also the site of the interchange between the Yreka Western Railroad and the Central Oregon and Pacific Railroad.

Montague and the Shasta Valley are located in a rain shadow created by the Klamath Mountains, giving the area a climate and vegetation type more similar to points east of the Cascades, with average annual precipitation similar to Bend, Oregon.

The area experiences cool to cold winters with somewhat frequent snowfall, and hot summers with large diurnal temperature variation and nearly constant sunshine.

At the 2000 census there were 1,456 people in 560 households, including 390 families, in the city.

In the California State Legislature, Montague is in the 1st Senate District, represented by Republican Megan Dahle,[11] and the 1st Assembly District, represented by Republican Heather Hadwick.

[13] Montague is home of the Big Springs Union Elementary School District.