Denali National Park and Preserve
Alaska, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and Climate
Denali National Park and Preserve, AK

Wonder Lake in Denali National Park and Preserve in Alaska
Wonder Lake in Denali National Park and Preserve in Alaska
  • The average high temperature in September: 43°F

The warmest month (with the highest average high temperature) is July (57°F).
The month with the lowest average high temperature is January (5°F).

  • The average low temperature in September: 27°F

The month with the highest average low temperature is July (39°F).
The coldest month (with the lowest average low temperature) is January (-13°F).

  • The average rainfall in September: 1.8"

The wettest month (with the highest rainfall) is July (3").
Driest months (with the lowest rainfall) are April and May (0.7").

  • The average rainfall days in September: 15 days

Months with the highest number of rainy days are July and August (16 days).
The month with the lowest number of rainy days is April (8 days).

  • The average daylight in September: 13h

The month with the longest days is June (Average daylight: 20h).
The month with shortest days is December (Average daylight: 5h).

  • The average sunshine in September: 5h

Months with most sunshine are May and June (Average sunshine: 9h).
Months with least sunshine are January, November and December (Average sunshine: 2).

  • The average UV index in September: 2

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 0).