Monument Valley weather in September 2025

Expect 28°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Monument Valley in September based on long-term weather averages. There is usually 6 days with some rainfall and 21 mm of average monthly rainfall in September.

  • 28°C maximum daytime temperature in September in Monument Valley28
    28°C max day temperature
  • 10 hours of sunshine per day
  • 6 days with some rainfall in September in Monument Valley6
    6 days with some rainfall
  • 9°C minimum night-time temperature in September in Monument Valley9
    9°C min night temperature
  • 12 hours of daylight per day in September in Monument Valley12
    12 hours of daylight per day
  • Low heat & humidity in September in Monument ValleyL
    Low heat & humidity
  • 21 mm monthly rainfall in September in Monument Valley21
    21 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Monument Valley8
    8 (Very High) UV index

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The September weather guide for Arizona (Monument Valley) 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)

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How hot is it in Monument Valley in September?

Daytime temperatures usually reach 28°C in Monument Valley in September with low heat and humidity, falling to 9°C at night.

How sunny is it in Monument Valley in September?

There are normally 10 hours of bright sunshine each day in Monument Valley in September - that's 81% of daylight hours.

Does it rain in Monument Valley in September?

There are usually 6 days with some rain in Monument Valley in September and the average monthly rainfall is 21mm.

Monument Valley September sunrise & sunset times

Browse the sunrise and sunset times for Monument Valley in September 2025. Select a month to view Monument Valley sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:52 18:49
Monday, 15th September 2025 06:03 18:28
Tuesday, 30th September 2025 06:16 18:05

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