Flagstaff weather in September
Mild and comfortable, with occasional showers. Average highs of 24°C and lows of 12°C, with around 7 rainy days expected throughout the month.
✦ This is a recommended month to visit Flagstaff. The combination of weather, atmosphere and experience is at its best.
Average high
24°C
Average low
12°C
Rainy days
7 days
Best months to visit
May, June, August, September
What to do in Flagstaff in September
Whatever the weather, Flagstaff rewards curious visitors. Here are some of the best ways to spend your time:
Grand Canyon South Rim day trip: geology and vistas
Sedona day trip: red rock formations and artist galleries
Walnut Canyon cliff dwellings archaeological site tour
Arizona Snowbowl skiing and chairlift summer rides
Lowell Observatory: Pluto discovery and stargazing
Route 66 nostalgia tour: retro diners and memorabilia
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
5C
Cold, with occasional showers.
February
7C
Cold, with occasional showers.
March
10C
Cool, with occasional showers.
April
16C
Cool, and mostly sunny skies.
Recommended
May
20C
Mild and comfortable, with occasional showers.
Recommended
June
27C
Warm and pleasant, and mostly sunny skies.
July
28C
Warm and pleasant, with some rainy days.
Recommended
August
27C
Warm and pleasant, with some rainy days.
Recommended
September (you are here)
24C
Mild and comfortable, with occasional showers.
October
18C
Mild and comfortable, with occasional showers.
November
11C
Cool, and mostly sunny skies.
December
6C
Cold, with occasional showers.
Book your September trip to Flagstaff
Find hotels, tours and experiences for the perfect escape.
