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Fort Simpson weather in September 2025
Expect daytime maximum temperatures of 13°C in Fort Simpson, Northwest Territories in September based on long-term weather averages. There are 5 hours of sunshine per day on average.
- 13°C max day temperature
13
- 5 hours of sunshine per day
- 9 days with some rainfall
9
- 2°C min night temperature
2
- 13 hours of daylight per day
13
- No heat & humidity
0
- 30 mm of monthly rainfall
30
- 2 (Low) UV index
2
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Recommended for the Northwest Territories
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)
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 |
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