January weather forecast
Mammoth Cave National Park, KY

Prone to the gripping chill of winter, January flaunts the coldest temperatures of the year in Mammoth Cave National Park, Kentucky. The high to low temperature range settles between 41°F (5°C) and 23°F (-5°C), harboring a cold atmosphere. Visitors need to be prepared for a significant amount of rainfall too, as it's one of the wetter months. The daylight duration remains relatively short, fostering early nights and late mornings. The UV index is also at its lowest, providing limited sun exposure for those who venture outdoors.

Temperature

The month of January sees the lowest average temperatures, reaching 41°F (5°C) at the peak and 23°F (-5°C) at the low.

Rainfall

In Mammoth Cave National Park, in January, it is raining for 11 days, with typically 3.9" (99mm) of accumulated precipitation. Throughout the year, in Mammoth Cave National Park, there are 126 rainfall days, and 50.63" (1286mm) of precipitation is accumulated.

Daylight

In January, the average length of the day is 9h and 57min.
On the first day of January in Mammoth Cave National Park, sunrise is at 6:58 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 5:07 pm CST.

Sunshine

The months with the least sunshine are January and December, with an average of 4h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In January, a daily UV index of 2 turns into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.