Fort St. John weather in September 2025

Expect 59°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Fort St. John in September. Check more long-term weather averages for Fort St. John in September before you book your next holiday to British Columbia in 2025/2026.

  • 59°F maximum daytime temperature in September in Fort St. John59
    59°F max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in September in Fort St. John10
    10 days with some rainfall
  • 37°F minimum night-time temperature in September in Fort St. John37
    37°F min night temperature
  • 13 hours of daylight per day in September in Fort St. John13
    13 hours of daylight per day
  • No heat & humidity in September in Fort St. John0
    No heat & humidity
  • 1.7 inches monthly rainfall in September in Fort St. John1.7
    1.7 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Fort St. John3
    3 (Moderate) UV index

More about Fort St. John

Fort St. John by month

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

Recommended for British Columbia

Travel Up: up to 40% with flights + hotel deals

  • Combine flights + hotel & save up to 40% on holiday bookings
  • Search for holiday deals for destinations worldwide
  • Filter offers by price, board basis, star rating & more
Go to Travel Up deal >>

View all Travel Up offers

The September weather guide for British Columbia (Fort St. John) 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 Canada

How warm is it in Fort St. John in September?

Daytime temperatures usually reach 59°F in Fort St. John in September, falling to 37°F at night.

How sunny is it in Fort St. John in September?

There are normally 6 hours of bright sunshine each day in Fort St. John in September - that's 43% of daylight hours.

Does it rain in Fort St. John in September?

There are usually 10 days with some rain in Fort St. John in September and the average monthly rainfall is 1.7 inches.

Fort St. John September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:08 19:57
Monday, 15th September 2025 06:36 19:20
Tuesday, 30th September 2025 07:05 18:40

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^