August weather forecast
Mammoth Cave National Park, KY

August ushers in a minor respite from the extreme summer weather seen in July. While remaining considerably warm, temperature and UV index show slight declines. The extended daylight hours continue to contract gradually, hinting at the upcoming autumn season. Rainfall remains consistent, ensuring the land remains hydrated amidst the summer heat. For tourists and locals, August continues to offer the joys of summer without the severe heat of the preceding month.

Temperature

Welcoming August, Mammoth Cave National Park notes an average high-temperature of a still tropical 86°F (30°C), nearly consistent with July's 87.8°F (31°C). August, marked by an average low-temperature of 64.4°F (18°C), indicates a large temperature drop from the daytime peak.

Rainfall

In Mammoth Cave National Park, in August, it is raining for 9 days, with typically 3.78" (96mm) of accumulated precipitation. Throughout the year, there are 126 rainfall days, and 50.63" (1286mm) of precipitation is accumulated.

Daylight

In August, the average length of the day is 13h and 32min.
On the first day of August, sunrise is at 5:49 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 7:14 pm CDT.

Sunshine

In Mammoth Cave National Park, the average sunshine in August is 9h.

UV index

The average daily maximum UV index in August is 9. A UV Index of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 9 during August leads to these instructions:
Immediate damage can occur to skin and eyes if left unprotected. Always take necessary precautions. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout.