Missoula weather in September 2025

Expect 70°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Missoula in September. Check more long-term weather averages for Missoula in September before you book your next holiday to Montana in 2025/2026.

  • 70°F maximum daytime temperature in September in Missoula70
    70°F max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Missoula8
    8 days with some rainfall
  • 39°F minimum night-time temperature in September in Missoula39
    39°F min night temperature
  • 13 hours of daylight per day in September in Missoula13
    13 hours of daylight per day
  • No heat & humidity in September in Missoula0
    No heat & humidity
  • 1.2 inches monthly rainfall in September in Missoula1.2
    1.2 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Missoula5
    5 (Moderate) UV index

More about Missoula

Missoula by month

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

Recommended for Montana

Hopper: Exclusive deals on hotels worldwide

  • Check out exclusive hotel deals available in Hopper App
  • Save on hotels, flights & car hire in 2023/2024
  • Download & use for FREE. No hidden charges
Go to Hopper deal >>

The September weather guide for Montana (Missoula) 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 hot is it in Missoula in September?

Daytime temperatures usually reach 70°F in Missoula in September, falling to 39°F at night.

How sunny is it in Missoula in September?

There are normally 9 hours of bright sunshine each day in Missoula in September - that's 69% of daylight hours.

Does it rain in Missoula in September?

There are usually 8 days with some rain in Missoula in September and the average monthly rainfall is 1.2 inches.

Missoula September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:56 19:15
Monday, 15th September 2025 06:14 18:47
Tuesday, 30th September 2025 06:34 18:17

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^