What’s the Weather Like in Montana in September?

Montana is huge, with the climate varying based on the region you’re visiting. Overall, you can expect temperature highs around 75 degrees Fahrenheit and lows around 40 degrees Fahrenheit in September.

The weather is usually still mild at lower elevations. If you’re spending the night in the mountains or at either National Park, be prepared for the temperatures to drop as low as the 30s at night. And no matter where you are in Montana during September, a surprise early snowfall is always possible!

We highly suggest bringing evening layers to stay warm!

(Full article: https://travelmontananow.com/montana-in-september/)