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World Travel Guide > Guides > North America > United States of America > Montana

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Montana Weather, climate and geography

Weather and climate

Best time to visit

Summer temperatures average from 14.4°C to 30°C (58°F to 86°F). Seasonal extremes are greater to the east of the Continental Divide. The Great Plains are subject to waves of frigid arctic air six to 12 times each winter. Winter temperatures average -10.6°C to -0.6°C (13°F to 31°F).

Required clothing

Lightweights for the summer and heavyweights with extra bundling for the winter.