May weather forecastDenali National Park and Preserve, AK

Weather in May

As the calendar turns to May, Mother Nature paints a clearer image of spring in Denali National Park and Preserve. As the daily sunshine hours stretch to 9 hours, it results in a significant jump in the UV index up to 4. The park gets more exposure to the sun, moderating the ambient temperature. The continual increase in high temperatures and a slight bump in rainfall signals that the park is moving further into spring. These changes cultivate a special ambiance that is both distinct to May and appreciated by its visitors.

Temperature

A clear rise in the average high-temperature is observed during May, increasing from a subzero cold 28.4°F (-2°C) in April to a chilly 42.8°F (6°C). Denali National Park and Preserve's May nights cool down to an average low-temperature of 23°F (-5°C).

Rainfall

In Denali National Park and Preserve, Alaska, in May, during 10 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 145 rainfall days, and 16.85" (428mm) of precipitation is accumulated.

Daylight

The average length of the day in May is 18h and 9min.
On the first day of May, sunrise is at 5:40 am and sunset at 10:23 pm. On the last day of the month, sunrise is at 4:16 am and sunset at 11:49 pm AKDT.

Sunshine

The months with the most sunshine are May and June, with an average of 9h of sunshine.

UV index

In Denali National Park and Preserve, Alaska, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.