Mammoth Cave weather in August 2025

Expect 86°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Mammoth Cave in August. Check more long-term weather averages for Mammoth Cave in August before you book your next holiday to Kentucky in 2025/2026.

  • 86°F maximum daytime temperature in August in Mammoth Cave86
    86°F max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in August in Mammoth Cave9
    9 days with some rainfall
  • 64°F minimum night-time temperature in August in Mammoth Cave64
    64°F min night temperature
  • 14 hours of daylight per day in August in Mammoth Cave14
    14 hours of daylight per day
  • High heat & humidity in August in Mammoth CaveH
    High heat & humidity
  • 3.8 inches monthly rainfall in August in Mammoth Cave3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Mammoth Cave9
    9 (Very High) UV index

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The August weather guide for Kentucky (Mammoth Cave) 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 Mammoth Cave in August?

Daytime temperatures usually reach 86°F in Mammoth Cave in August with high heat and humidity, falling to 64°F at night.

How sunny is it in Mammoth Cave in August?

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

Does it rain in Mammoth Cave in August?

There are usually 9 days with some rain in Mammoth Cave in August and the average monthly rainfall is 3.8 inches.

Mammoth Cave August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:50 18:51
Saturday, 16th August 2025 05:02 18:35
Sunday, 31st August 2025 05:14 18:14

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