The attractive frozen Niagara in the historical Mammoth Cave National Park, Kentucky
Weather in September
As September approaches, Mammoth Cave National Park enjoys significant weather changes that mark the onset of fall. Temperature and daylight hours decrease noticeably, carrying mild and shorter days. Rainfall sustains its rhythm, keeping the park nourished and preparing it for the shifting season. With a declining UV index, sun exposure becomes more comfortable, enhancing outdoor experiences. September bridges summer's vibrancy with autumn's tranquility, marking an appealing time for explorers and nature lovers.
On the first day of September in Mammoth Cave National Park, sunrise is at 6:15 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:28 pm CDT.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
[Resources]Temperature
September marks a gentle change in average high-temperature, declining from August's tropical 86°F (30°C) to a warm 80.6°F (27°C). September nights in Mammoth Cave National Park experience a distinct temperature drop from the daily highs, with an average low-temperature of 57.2°F (14°C).Rainfall
In Mammoth Cave National Park, during September, the rain falls for 8 days and regularly aggregates up to 3.74" (95mm) of precipitation. Throughout the year, in Mammoth Cave National Park, there are 126 rainfall days, and 50.63" (1286mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 25min.On the first day of September in Mammoth Cave National Park, sunrise is at 6:15 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:28 pm CDT.
Sunshine
The average sunshine in September is 8h.UV index
In September, the average daily maximum UV index in Mammoth Cave National Park is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What is the average September temperature in Mammoth Cave National Park?
The average high-temperature, in September, in Mammoth Cave National Park, is 80.6°F (27°C), while the average low-temperature is 57.2°F (14°C).
How much does it rain in Mammoth Cave National Park in September?
In September, in Mammoth Cave National Park, Kentucky, the rain falls for 8 days. Throughout September, 3.74" (95mm) of precipitation is accumulated.
What is the average length of the day in September in Mammoth Cave National Park?
In September, the average day length in Mammoth Cave National Park is 12h and 25min.
When is the sunrise / sunset in September in Mammoth Cave National Park?
On the first day of September in Mammoth Cave National Park, Kentucky, sunrise is at 6:15 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:28 pm CDT.
How many hours of sunshine does Mammoth Cave National Park have in September?
In Mammoth Cave National Park, Kentucky, the average sunshine duration in September is 8h.
How high is the UV index in September in Mammoth Cave National Park?
The average daily maximum UV index in September in Mammoth Cave National Park is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average temperature in September
Mammoth Cave National Park, KY
- Average high temperature in September: 81°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 September: 57°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).
Average rainfall in September
Mammoth Cave National Park, KY
- Average rainfall in September: 3.7"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is October (3").
Average rainfall days in September
Mammoth Cave National Park, KY
- Average rainfall days in September: 8 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).
Average daylight in September /
Average sunshine in September
Mammoth Cave National Park, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h
The month with the most sunshine is June (Average sunshine: 10h).
The months with the least sunshine are January and December (Average sunshine: 4h).
Average UV index in September
Mammoth Cave National Park, KY
- Average UV index in September: 7
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).
Mammoth Cave National Park, Kentucky, USA
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