April weather forecastDenali National Park and Preserve, AK

Weather in April

April brings undeniable signs of spring with warmer temperatures and longer daylight hours. Days get significantly longer with an increase in daylight to 15 hours. There is an observable shift in the quantity of rainfall which drops to 0.7" (18mm), the second lowest after January. This month sees the lowest average rainfall in early spring before the wetter months ahead. The gentle transition to a more moderate climate begins to shape April's weather.

Temperature

April's arrival sees a rise in the average high-temperature, jumping from March's 15.8°F (-9°C) to a still subzero cold 28.4°F (-2°C). An average low-temperature of 8.6°F (-13°C) is recorded during the nights in April.

Rainfall

April is the month with the least rainfall. Rain falls for 8 days and accumulates 0.67" (17mm) of precipitation.

Daylight

In Denali National Park and Preserve, the average length of the day in April is 15h and 2min.
On the first day of April, sunrise is at 7:20 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 10:20 pm AKDT.

Sunshine

In Denali National Park and Preserve, the average sunshine in April is 8h.

UV index

The average daily maximum UV index in April is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 2 in April, converts into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.