July weather forecast
Mammoth Cave National Park, KY

Entering July, Mammoth Cave National Park experiences its peak summer intensity. The high temperature reaches its zenith at 88°F (31.1°C), defining it as the hottest month. Coinciding with the scorching temperatures, the UV index also peaks. Despite these soaring values, daylight hours start to subtly reduce, signaling the impending move towards fall. Keep in mind that hydration becomes a priority for trekkers under the blazing Kentucky sun.

Temperature

July is Mammoth Cave National Park's warmest month, registering average high temperatures of 87.8°F (31°C) and lows of 66.2°F (19°C).

Rainfall

In Mammoth Cave National Park, during July, the rain falls for 11 days and regularly aggregates up to 4.8" (122mm) of precipitation. In Mammoth Cave National Park, during the entire year, the rain falls for 126 days and collects up to 50.63" (1286mm) of precipitation.

Daylight

The average length of the day in July is 14h and 25min.
On the first day of the month, sunrise is at 5:28 am and sunset at 8:08 pm. On the last day of July, sunrise is at 5:49 am and sunset at 7:52 pm CDT.

Sunshine

In July, the average sunshine is 9h.

UV index

The months with the highest UV index in Mammoth Cave National Park, Kentucky, are June and July, with an average maximum UV index of 10. A UV Index estimate of 8 to 10 represents a very high threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 10 in July translates into the following instructions:
It is crucial to take precautions; skin and eyes can get damaged if left unprotected. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Experience reduced UV exposure by about half when donning a wide-brim hat. Apply generously and frequently reapply a sunscreen with SPF 30 or more even on cloudy days, particularly after a swim or outdoor exercise.