Denali National Park weather in September 2025

Expect 43°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Denali National Park in September. Check more long-term weather averages for Denali National Park in September before you book your next holiday to Alaska in 2025/2026.

  • 43°F maximum daytime temperature in September in Denali National Park43
    43°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in September in Denali National Park15
    15 days with some rainfall
  • 27°F minimum night-time temperature in September in Denali National Park27
    27°F min night temperature
  • 13 hours of daylight per day in September in Denali National Park13
    13 hours of daylight per day
  • No heat & humidity in September in Denali National Park0
    No heat & humidity
  • 1.8 inches monthly rainfall in September in Denali National Park1.8
    1.8 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in September in Denali National Park2
    2 (Low) UV index

More about Denali National Park

Denali National Park by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Alaska

Secret Flight Club promo code: 40% off memberships

  • Save 40% on annual memberships with exclusive offer
  • Sign up to Secret Flight Club for FREE 7-day trial
  • Members usually save up to 81% with flight deals
Show discount codeShow discount code ******L40
Redeem Secret Flight Club discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Secret Flight Club offers

The September weather guide for Alaska (Denali National Park) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

Back to top

More about the USA

How cold is it in Denali National Park in September?

Daytime temperatures usually reach 43°F in Denali National Park in September, falling to 27°F at night.

How sunny is it in Denali National Park in September?

There are normally 5 hours of bright sunshine each day in Denali National Park in September - that's 36% of daylight hours.

Does it rain in Denali National Park in September?

There are usually 15 days with some rain in Denali National Park in September and the average monthly rainfall is 1.8 inches. Rain may fall as snow in this month.

Denali National Park September sunrise & sunset times

Browse the sunrise and sunset times for Denali National Park in September 2025. Select a month to view Denali National Park sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:48 20:13
Monday, 15th September 2025 06:27 19:24
Tuesday, 30th September 2025 07:08 18:32

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^