Fort Collins weather in September 2021

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  • 24°C maximum daytime temperature in September in Fort Collins24
    24°C max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Fort Collins7
    7 days with some rainfall
  • 8°C minimum night-time temperature in September in Fort Collins8
    8°C min night temperature
  • 12 hours of daylight per day in September in Fort Collins12
    12 hours of daylight per day
  • No heat & humidity in September in Fort Collins0
    No heat & humidity
  • 32 mm monthly rainfall in September in Fort Collins32
    32 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Fort Collins7
    7 (High) UV index

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The September weather guide for Fort Collins, Colorado 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.

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How hot is it in Fort Collins in September?

Daytime temperatures usually reach 24°C in Fort Collins in September, falling to 8°C at night.

How sunny is it in Fort Collins in September?

There are normally 9 hours of bright sunshine each day in Fort Collins in September - that's 72% of daylight hours.

Does it rain in Fort Collins in September?

There are usually 7 days with some rain in Fort Collins in September and the average monthly rainfall is 32mm.

Fort Collins sunrise & sunset times for September 2021

Browse the sunrise & sunset times for Fort Collins in September 2021. Select a month to view Fort Collins sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st September 2021 06:28 19:32
Wednesday, 15th September 2021 06:41 19:09
Thursday, 30th September 2021 06:56 18:44
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where is hot in Colorado in September for 2021/2022?

Below are average maximum temperatures at popular destinations in Colorado in September. Select a destination to see more weather parameters.

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