September weather forecast
Denali National Park and Preserve, AK

September, the first month of the autumn in Denali National Park and Preserve, is still a chilly month, with temperature in the range of an average low of 26.6°F (-3°C) and an average high of 42.8°F (6°C).

Temperature

In Denali National Park and Preserve, the average high-temperature in September drops from a fresh 53.6°F (12°C) in August to a frosty 42.8°F (6°C). In September, the average low-temperature is 26.6°F (-3°C).

Rainfall

In September, in Denali National Park and Preserve, the rain falls for 15 days. Throughout September, 1.77" (45mm) of precipitation is 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

In Denali National Park and Preserve, Alaska, the average length of the day in September is 12h and 56min.
On the first day of September in Denali National Park and Preserve, sunrise is at 6:51 am and sunset at 9:17 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 7:38 pm AKDT.

Sunshine

The average sunshine in September in Denali National Park and Preserve, Alaska, is 5h.

UV index

The average daily maximum UV index in September in Denali National Park and Preserve, Alaska, is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 2 in September transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.