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Flagstaff weather in August 2025
Expect 26°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Flagstaff in August. Check more long-term weather averages for Flagstaff in August before you book your next holiday to Arizona in 2025/2026.
- 2626°C max day temperature
- 10 hours of sunshine per day
- 99 days with some rainfall
- 77°C min night temperature
- 1313 hours of daylight per day
- LLow heat & humidity
- 7373 mm of monthly rainfall
- 1111 (Extreme) UV index
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Recommended for Arizona
The August weather guide for Arizona (Flagstaff) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Arizona
How hot is it in Flagstaff in August?
Daytime temperatures usually reach 26°C in Flagstaff in August with low heat and humidity, falling to 7°C at night.
How sunny is it in Flagstaff in August?
There are normally 10 hours of bright sunshine each day in Flagstaff in August - that's 75% of daylight hours.
Does it rain in Flagstaff in August?
There are usually 9 days with some rain in Flagstaff in August and the average monthly rainfall is 73mm.
Flagstaff August sunrise & sunset times
Browse the sunrise and sunset times for Flagstaff in August 2025. Select a month to view Flagstaff sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 05:36 | 19:29 |
Saturday, 16th August 2025 | 05:47 | 19:14 |
Sunday, 31st August 2025 | 05:59 | 18:54 |
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