FallPeak season ~73°F highs

Things to do in Flagstaff in September

September is one of the best months to visit Flagstaff, with average highs around 73°F. Crisp air and changing leaves make parks and viewpoints shine.

Plan a September weekend Where else in September

Best picks for September

What's famous here, weighted toward what shines in September.

1Foliage walks

Monument Valley Navajo Tribal Park

basin of the Colorado Plateau on the Arizona–Utah border in the western United States

2Foliage walks

Grand Canyon National Park

national park in Coconino and Mohave counties in Arizona, United States

Holidays in September 2027

Labour Day · Mon, Sep 6

Expect busier roads and pricier stays around these dates. See long weekends.

Flagstaff in September: quick answers

Is September a good time to visit Flagstaff?

September is one of the best months to visit Flagstaff, with average highs around 73°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Flagstaff in September?

Average daytime highs are around 73°F, compared with 84°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.

What are the best things to do in Flagstaff in September?

Top picks for September: Monument Valley Navajo Tribal Park, Grand Canyon National Park, Grand Canyon, Petrified Forest National Park, Camel Butte.