Monument Valley weather in September 2025

Expect 82°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Monument Valley in September. Check more long-term weather averages for Monument Valley in September before you book your next holiday to Arizona in 2025/2026.

  • 82°F maximum daytime temperature in September in Monument Valley82
    82°F max day temperature
  • 10 hours of sunshine per day
  • 6 days with some rainfall in September in Monument Valley6
    6 days with some rainfall
  • 48°F minimum night-time temperature in September in Monument Valley48
    48°F 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
  • 0.8 inches monthly rainfall in September in Monument Valley0.8
    0.8 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Monument Valley8
    8 (Very High) UV index

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Monument Valley by month

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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)  |  Imperial (°F)

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More about Arizona

How hot is it in Monument Valley in September?

Daytime temperatures usually reach 82°F in Monument Valley in September with low heat and humidity, falling to 48°F 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 0.8 inches.

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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