Dayton weather in August 2025

Expect 84°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Dayton in August. Check more long-term weather averages for Dayton in August before you book your next holiday to Ohio in 2025/2026.

  • 84°F maximum daytime temperature in August in Dayton84
    84°F max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in August in Dayton10
    10 days with some rainfall
  • 61°F minimum night-time temperature in August in Dayton61
    61°F min night temperature
  • 14 hours of daylight per day in August in Dayton14
    14 hours of daylight per day
  • Moderate heat & humidity in August in DaytonM
    Moderate heat & humidity
  • 3.1 inches monthly rainfall in August in Dayton3.1
    3.1 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Dayton8
    8 (Very High) UV index

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The August weather guide for Ohio (Dayton) 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 Dayton in August?

Daytime temperatures usually reach 84°F in Dayton in August with moderate heat and humidity, falling to 61°F at night.

How sunny is it in Dayton in August?

There are normally 9 hours of bright sunshine each day in Dayton in August - that's 64% of daylight hours.

Does it rain in Dayton in August?

There are usually 10 days with some rain in Dayton in August and the average monthly rainfall is 3.1 inches.

Dayton August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:36 19:50
Saturday, 16th August 2025 05:50 19:31
Sunday, 31st August 2025 06:04 19:09

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