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

In April, the average high-temperature in Mammoth Cave National Park, Kentucky, increases from a refreshing 57.2°F (14°C) in March to an agreeable 68°F (20°C). Throughout April nights, a significant departure from daytime temperatures, with an average low of 44.6°F (7°C), is recognized in Mammoth Cave National Park.

Rainfall

In Mammoth Cave National Park, during April, the rain falls for 11 days and regularly aggregates up to 4.21" (107mm) of precipitation. In Mammoth Cave National Park, during the entire year, the rain falls for 126 days and collects up to 50.63" (1286mm) of precipitation.

Daylight

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

Sunshine

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

UV index

In April, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In April, the maximum UV index of 7 translates into these guidelines:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.