Glenwood Springs weather in September 2025

Expect 20°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Glenwood Springs in September. Check more long-term weather averages for Glenwood Springs in September before you book your next holiday to Colorado in 2025/2026.

  • 20°C maximum daytime temperature in September in Glenwood Springs20
    20°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in Glenwood Springs8
    8 days with some rainfall
  • 0°C minimum night-time temperature in September in Glenwood Springs0
    0°C min night temperature
  • 12 hours of daylight per day in September in Glenwood Springs12
    12 hours of daylight per day
  • No heat & humidity in September in Glenwood Springs0
    No heat & humidity
  • 41 mm monthly rainfall in September in Glenwood Springs41
    41 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Glenwood Springs8
    8 (Very High) UV index

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The September weather guide for Colorado (Glenwood Springs) 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 hot is it in Glenwood Springs in September?

Daytime temperatures usually reach 20°C in Glenwood Springs in September, falling to -0°C at night.

How sunny is it in Glenwood Springs in September?

There are normally 9 hours of bright sunshine each day in Glenwood Springs in September - that's 73% of daylight hours.

Does it rain in Glenwood Springs in September?

There are usually 8 days with some rain in Glenwood Springs in September and the average monthly rainfall is 41mm.

Glenwood Springs September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:38 18:40
Monday, 15th September 2025 05:51 18:17
Tuesday, 30th September 2025 06:05 17:53

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