Fort Smith weather in August 2025

Expect daytime maximum temperatures of 34°C in Fort Smith, Arkansas in August and very high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 80 mm of rainfall in the month.

  • 34°C maximum daytime temperature in August in Fort Smith34
    34°C max day temperature
  • 10 hours of sunshine per day
  • 7 days with some rainfall in August in Fort Smith7
    7 days with some rainfall
  • 20°C minimum night-time temperature in August in Fort Smith20
    20°C min night temperature
  • 13 hours of daylight per day in August in Fort Smith13
    13 hours of daylight per day
  • Very high heat & humidity in August in Fort SmithVH
    Very High heat & humidity
  • 80 mm monthly rainfall in August in Fort Smith80
    80 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Fort Smith9
    9 (Very High) UV index

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The August weather guide for Arkansas (Fort Smith) 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 Fort Smith in August?

Daytime temperatures usually reach 34°C in Fort Smith in August with very high heat and humidity, falling to 20°C at night.

How sunny is it in Fort Smith in August?

There are normally 10 hours of bright sunshine each day in Fort Smith in August - that's 71% of daylight hours.

Does it rain in Fort Smith in August?

There are usually 7 days with some rain in Fort Smith in August and the average monthly rainfall is 80mm.

Fort Smith August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:27 19:21
Saturday, 16th August 2025 05:38 19:05
Sunday, 31st August 2025 05:50 18:46

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