Flagstaff Weather in August

The climate in Flagstaff during August can be summarized as mild and reasonably dry.

August is in the summer in Flagstaff and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 7°C (45°F) is normal.

On average August is the wettest month of the year in Flagstaff with around 73mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.7 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Flagstaff in August 2024.