Fort Simpson weather in September 2025

Expect 13°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Fort Simpson in September. Check more long-term weather averages for Fort Simpson in September before you book your next holiday to Northwest Territories in 2025/2026.

  • 13°C maximum daytime temperature in September in Fort Simpson13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in September in Fort Simpson9
    9 days with some rainfall
  • 2°C minimum night-time temperature in September in Fort Simpson2
    2°C min night temperature
  • 13 hours of daylight per day in September in Fort Simpson13
    13 hours of daylight per day
  • No heat & humidity in September in Fort Simpson0
    No heat & humidity
  • 30 mm monthly rainfall in September in Fort Simpson30
    30 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in September in Fort Simpson2
    2 (Low) UV index

More about the Fort Simpson

Fort Simpson by month

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

Recommended for the Northwest Territories

Travelbag: Latest holiday sale offers worldwide

  • Explore latest sale offers on holidays in 2025/2026
  • Filter deals by continent, star rating & holiday type
  • Including Dubai, Caribbean, North America, Asia & Pacific
Go to Travelbag deal >>

View all Travelbag offers

TravelbagHoliday deal finder

The September weather guide for Northwest Territories (Fort Simpson) 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 Canada

How warm is it in Fort Simpson in September?

Daytime temperatures usually reach 13°C in Fort Simpson in September, falling to 2°C at night.

How sunny is it in Fort Simpson in September?

There are normally 5 hours of bright sunshine each day in Fort Simpson in September - that's 37% of daylight hours.

Does it rain in Fort Simpson in September?

There are usually 9 days with some rain in Fort Simpson in September and the average monthly rainfall is 30mm.

Fort Simpson September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:56 20:12
Monday, 15th September 2025 06:32 19:27
Tuesday, 30th September 2025 07:11 18:38

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^