May weather forecast
Denali National Park and Preserve, AK

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

In May, the average high-temperature increases considerably from a subzero cold 28.4°F (-2°C) in April to a frosty 42.8°F (6°C). Throughout the nights in May, Denali National Park and Preserve experiences an average low-temperature of 23°F (-5°C).

Rainfall

In Denali National Park and Preserve, during May, the rain falls for 10 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 145 rainfall days, and 16.85" (428mm) of precipitation is accumulated.

Daylight

In Denali National Park and Preserve, Alaska, the average length of the day in May is 18h and 9min.
On the first day of May in Denali National Park and Preserve, 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 in Denali National Park and Preserve are May and June, with an average of 9h of sunshine.

UV index

In Denali National Park and Preserve, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In May, an average UV index of 4 transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.