August weather forecastDenali National Park and Preserve, AK

Weather in August

As August rolls in, weather patterns in Denali National Park and Preserve begin their transition back towards cooler temperatures. Although the remnants of summer weather can still be felt with high temperatures lingering at 54°F (12.2°C), the arrival of August is a telltale sign of oncoming autumn. There is a drop in daylight hours to 16.1, signaling an imminent change. While rainfall remains nearly constant, the reduction in daily sunlight hints at the slow swing from summer ending to autumn beginning. Thus, August serves as a pivotal turn point in Denali National Park and Preserve's weather cycle.

Temperature

August's advent notes a subtle adjustment in average high-temperature to a fresh 53.6°F (12°C) from July. An average low-temperature of 35.6°F (2°C) is noted during the month of August.

Rainfall

In Denali National Park and Preserve, in August, during 16 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Denali National Park and Preserve, during the entire year, the rain falls for 145 days and collects up to 16.85" (428mm) of precipitation.

Daylight

The average length of the day in August is 16h and 4min.
On the first day of August, sunrise is at 5:24 am and sunset at 10:57 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 9:18 pm AKDT.

Sunshine

In Denali National Park and Preserve, the average sunshine in August is 6h.

UV index

The average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 4 in August transforms into this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a wide-brim hat for potent defense against up to 50% of UV rays.