Butte weather in September 2025

Expect 19°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Butte in September. Check more long-term weather averages for Butte in September before you book your next holiday to Montana in 2025/2026.

  • 19°C maximum daytime temperature in September in Butte19
    19°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Butte8
    8 days with some rainfall
  • 2°C minimum night-time temperature in September in Butte2
    2°C min night temperature
  • 12 hours of daylight per day in September in Butte12
    12 hours of daylight per day
  • No heat & humidity in September in Butte0
    No heat & humidity
  • 35 mm monthly rainfall in September in Butte35
    35 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Butte6
    6 (High) UV index

More about Butte

Butte by month

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

Recommended for Montana

  • 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

The September weather guide for Montana (Butte) 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 / mm)  |  Imperial (°F / inches)

Back to top

More about the USA

How hot is it in Butte in September?

Daytime temperatures usually reach 19°C in Butte in September, falling to 2°C at night.

How sunny is it in Butte in September?

There are normally 9 hours of bright sunshine each day in Butte in September - that's 68% of daylight hours.

Does it rain in Butte in September?

There are usually 8 days with some rain in Butte in September and the average monthly rainfall is 35mm.

Butte September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:51 19:08
Monday, 15th September 2025 06:09 18:41
Tuesday, 30th September 2025 06:28 18:11

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^