Weather in Flagstaff in August
Flagstaff, United States averages a high of 26.3°C (79.3°F) and low of 15°C (59°F) in August, with 14 rain days and 12.3 hours of daily sunshine. Travel score: 82.3/100 (Excellent). The best time to visit Flagstaff is June.
High
26°C79°F
Low
15°C59°F
🌧️
14
rain days
☀️
12.3
hrs/day sunshine
💧
56%
humidity
82— Excellent
August in Flagstaff is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Flagstaff?
How much does it rain in Flagstaff in August?
Flagstaff receives an average of 109mm of rainfall across 14 rainy days in August. The annual total is 552.2mm.
What should I pack for Flagstaff in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 26°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (14 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in August?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31