Grande Prairie weather in September 2025

Expect 16°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Grande Prairie in September. Check more long-term weather averages for Grande Prairie in September before you book your next holiday to Alberta in 2025/2026.

  • 16°C maximum daytime temperature in September in Grande Prairie16
    16°C max day temperature
  • 6 hours of sunshine per day
  • 11 days with some rainfall in September in Grande Prairie11
    11 days with some rainfall
  • 3°C minimum night-time temperature in September in Grande Prairie3
    3°C min night temperature
  • 13 hours of daylight per day in September in Grande Prairie13
    13 hours of daylight per day
  • No heat & humidity in September in Grande Prairie0
    No heat & humidity
  • 41 mm monthly rainfall in September in Grande Prairie41
    41 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Grande Prairie3
    3 (Moderate) UV index

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The September weather guide for Alberta (Grande Prairie) 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)

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How warm is it in Grande Prairie in September?

Daytime temperatures usually reach 16°C in Grande Prairie in September, falling to 3°C at night.

How sunny is it in Grande Prairie in September?

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

Does it rain in Grande Prairie in September?

There are usually 11 days with some rain in Grande Prairie in September and the average monthly rainfall is 41mm.

Grande Prairie September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:02 19:47
Monday, 15th September 2025 06:28 19:11
Tuesday, 30th September 2025 06:57 18:32

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