May weather forecast
Mammoth Cave National Park, KY

The attractive frozen Niagara in the historical Mammoth Cave National Park, Kentucky
The attractive frozen Niagara in the historical Mammoth Cave National Park, Kentucky

Weather in May

May, the last month of the spring in Mammoth Cave National Park, is a warm month, with an average temperature fluctuating between 53.6°F (12°C) and 77°F (25°C).

Temperature

In Mammoth Cave National Park, the average high-temperature in May increases from a pleasant 68°F (20°C) in April to a moderately hot 77°F (25°C). The average low-temperature, in May, is 53.6°F (12°C).

Rainfall

May is the month with the most rainfall. Rain falls for 12 days and accumulates 5" (127mm) of precipitation.

Daylight

The average length of the day in May in Mammoth Cave National Park is 14h and 11min.
On the first day of the month, sunrise is at 5:49 am and sunset at 7:33 pm. On the last day of May, sunrise is at 5:26 am and sunset at 7:58 pm CDT.

Sunshine

The average sunshine in May is 9h.

UV index

In Mammoth Cave National Park, the average daily maximum UV index in May is 8. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 8 in May transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in May in Mammoth Cave National Park?

In May, the average high-temperature is 77°F (25°C), and the average low-temperature is 53.6°F (12°C).

What is the rainiest month in Mammoth Cave National Park?

The month with the most rainfall is May, when the rain falls for 12 days and typically aggregates up to 5" (127mm) of precipitation.

How many days does it rain in May in Mammoth Cave National Park?

In Mammoth Cave National Park, Kentucky, in May, it is raining for 12 days, with typically 5" (127mm) of accumulated precipitation.

How many hours of daylight does Mammoth Cave National Park have in May?

The average day length in May is 14h and 11min.

When are sunrise and sunset in May in Mammoth Cave National Park?

On the first day of May, sunrise is at 5:49 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 7:58 pm CDT.

How long on average sun shines in May in Mammoth Cave National Park?

The average sunshine duration in May in Mammoth Cave National Park is 9h.

What is the UV index reading in May in Mammoth Cave National Park?

The average daily maximum UV index in May in Mammoth Cave National Park is 8. A UV Index of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average rainfall days
Average sunshine
Average UV index

Average temperature in May
Mammoth Cave National Park, KY

Average temperature in May - Mammoth Cave National Park, KY
  • Average high temperature in May: 77°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in May: 54°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23°F).

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Average rainfall in May
Mammoth Cave National Park, KY

Average rainfall in May - Mammoth Cave National Park, KY
  • Average rainfall in May: 5"

The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is October (3").

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Average rainfall days in May
Mammoth Cave National Park, KY

Average rainfall days in May - Mammoth Cave National Park, KY
  • Average rainfall days in May: 12 days

The month with the highest number of rainy days is March (13 days).
The months with the least rainy days are September and October (8 days).

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Average daylight in May /
Average sunshine in May
Mammoth Cave National Park, KY

Average daylight in May / Average sunshine in May - Mammoth Cave National Park, KY
  • Average daylight in May: 14h and 11min

The month with the longest days is June (Average daylight: 14h and 41min).
The month with the shortest days is December (Average daylight: 9h and 40min).

  • Average sunshine in May: 9h

The month with the most sunshine is June (Average sunshine: 10h).
The months with the least sunshine are January and December (Average sunshine: 4h).

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Average UV index in May
Mammoth Cave National Park, KY

Average UV index in May - Mammoth Cave National Park, KY
  • Average UV index in May: 8

The months with the highest UV index are June and July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).

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