April weather forecast
Mammoth Cave National Park, KY

April witnesses a continuation of the warming atmosphere, signaling the heart of spring in Mammoth Cave National Park. Temperature fluctuations are more noticeable, encouraging a variety of plant and animal activity. Rainfall is still prevalent, providing nourishment for the thriving biodiversity within the park. Although the sun shines brighter, resulting in extended daylight, the UV index remains mild. Visitors can appreciate the intensifying greenery under the Kentucky sunlight without bearing excessive heat.

Temperature

Mammoth Cave National Park in April sees a temperature change, with average high-temperatures moving from a mild 57.2°F (14°C) in March to an agreeable 68°F (20°C). Mammoth Cave National Park documents a significant temperature variance in April, with the mean nighttime lows settling at a frosty 44.6°F (7°C).

Rainfall

In April, in Mammoth Cave National Park, the rain falls for 11 days. Throughout April, 4.21" (107mm) of precipitation is accumulated. Throughout the year, there are 126 rainfall days, and 50.63" (1286mm) of precipitation is accumulated.

Daylight

The average length of the day in April is 13h and 11min.
On the first day of April in Mammoth Cave National Park, sunrise is at 6:28 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:33 pm CDT.

Sunshine

In Mammoth Cave National Park, the average sunshine in April is 8h.

UV index

In April, 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 exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 7 in April suggests the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.