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Grand Canyon weather in September 2026
Expect daytime maximum temperatures of 82°F in Grand Canyon, Arizona in September based on long-term weather averages. There are 10 hours of sunshine per day on average.
- 82°F max day temperature
82 - 10 hours of sunshine per day
- 5 days with some rainfall
5 - 50°F min night temperature
50 - 12 hours of daylight per day
12 - No heat & humidity
0 - 0.9 inches of monthly rainfall
0.9 - 8 (Very High) UV index
8
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Recommended for Arizona
The September weather guide for Arizona (Grand Canyon) 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) | Imperial (°F)
More about Arizona
How hot is it in Grand Canyon in September?
Daytime temperatures usually reach 99°F in Grand Canyon in September with very high heat and humidity, falling to 70°F at night.
How sunny is it in Grand Canyon in September?
There are normally 11 hours of bright sunshine each day in Grand Canyon in September - that's 88% of daylight hours.
Does it ever rain in Grand Canyon in September?
There are usually 3 days with some rain in Grand Canyon in September and the average monthly rainfall is 0.9 inches.
Grand Canyon September sunrise & sunset times
Browse the sunrise and sunset times for Grand Canyon in September 2026. Select a month to view Grand Canyon sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Tuesday, 1st September 2026 | 06:00 | 18:56 |
| Tuesday, 15th September 2026 | 06:11 | 18:36 |
| Wednesday, 30th September 2026 | 06:23 | 18:13 |
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