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

Mammoth Cave National Park witnesses the coldest weather in January, with temperatures averaging a high of 41°F (5°C) and a low of 23°F (-5°C).

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, there are 126 rainfall days, and 50.63" (1286mm) of precipitation is accumulated.

Daylight

The average length of the day in January is 9h and 57min.
On the first day of January, 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

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

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: In January, the maximum UV index of 2 suggests this advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Around midday, solar radiation is most harmful; hence, exposure should be limited. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.