The beauty of Montana's weather system is that whether it is hot or cold, Montana is dry, and therefore, neither oppressively hot nor oppressively cold. Average annual precipitation is 15 inches, varying from 9.69 to more than 100 inches. Average daytime temperatures vary from 28 degrees in January to 84.5 degrees in July. Visitors to the state might want to bring a variety of clothes to stay abreast of the quickly changing weather in Montana. Montana is seldom consistently hot or cold.
Every season holds surprises.
Montanans dress in layers so they can peel clothes off or add them on. Return to Top Montana Geography Montana is a vast and varied state of mountains, canyons, river valleys, forests, grassy plains, badlands, and caverns. Its Big Sky covers a land area of more than 147,000 square miles, making Montana the fourth largest state in the nation. In area, it can accommodate Virginia, Maryland, Delaware, Pennsylvania, and New York, and still have room for the District of Columbia. There are fewer people living in the entire state of Montana than in the city of Phoenix.