Fort Collins weather in August 2025

Expect 28°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Fort Collins in August. Check more long-term weather averages for Fort Collins in August before you book your next holiday to Colorado in 2025/2026.

  • 28°C maximum daytime temperature in August in Fort Collins28
    28°C max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in August in Fort Collins9
    9 days with some rainfall
  • 13°C minimum night-time temperature in August in Fort Collins13
    13°C min night temperature
  • 14 hours of daylight per day in August in Fort Collins14
    14 hours of daylight per day
  • Low heat & humidity in August in Fort CollinsL
    Low heat & humidity
  • 33 mm monthly rainfall in August in Fort Collins33
    33 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Fort Collins9
    9 (Very High) UV index

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Recommended for Colorado

  • Kids stay & eat for free at Marriot Bonvoy
  • Destinations include Europe, Middle East & Africa
  • Valid for up to 2 adults & 2 kids aged up to 12

The August weather guide for Colorado (Fort Collins) 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 Fort Collins in August?

Daytime temperatures usually reach 28°C in Fort Collins in August with low heat and humidity, falling to 13°C at night.

How sunny is it in Fort Collins in August?

There are normally 10 hours of bright sunshine each day in Fort Collins in August - that's 72% of daylight hours.

Does it rain in Fort Collins in August?

There are usually 9 days with some rain in Fort Collins in August and the average monthly rainfall is 33mm.

Fort Collins August sunrise & sunset times

Browse the sunrise and sunset times for Fort Collins in August 2025. Select a month to view Fort Collins sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:58 19:15
Saturday, 16th August 2025 05:12 18:56
Sunday, 31st August 2025 05:27 18:33

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