Sierra Vista weather in August 2025

Expect daytime maximum temperatures of 90°F in Sierra Vista, Arizona in August based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 3.4 inches of rainfall in the month.

  • 90°F maximum daytime temperature in August in Sierra Vista90
    90°F max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in August in Sierra Vista11
    11 days with some rainfall
  • 64°F minimum night-time temperature in August in Sierra Vista64
    64°F min night temperature
  • 13 hours of daylight per day in August in Sierra Vista13
    13 hours of daylight per day
  • Moderate heat & humidity in August in Sierra VistaM
    Moderate heat & humidity
  • 3.4 inches monthly rainfall in August in Sierra Vista3.4
    3.4 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in August in Sierra Vista11
    11 (Extreme) UV index

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The August weather guide for Arizona (Sierra Vista) 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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How hot is it in Sierra Vista in August?

Daytime temperatures usually reach 90°F in Sierra Vista in August with moderate heat and humidity, falling to 64°F at night.

How sunny is it in Sierra Vista in August?

There are normally 10 hours of bright sunshine each day in Sierra Vista in August - that's 75% of daylight hours.

Does it rain in Sierra Vista in August?

There are usually 11 days with some rain in Sierra Vista in August and the average monthly rainfall is 3.4 inches.

Sierra Vista August sunrise & sunset times

Browse the sunrise and sunset times for Sierra Vista in August 2025. Select a month to view Sierra Vista sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:38 19:17
Saturday, 16th August 2025 05:47 19:03
Sunday, 31st August 2025 05:56 18:46

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