Grand Junction weather in October 2025

Expect 20°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Grand Junction in October. Check more long-term weather averages for Grand Junction in October before you book your next holiday to Colorado in 2025/2026.

  • 20°C maximum daytime temperature in October in Grand Junction20
    20°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in October in Grand Junction5
    5 days with some rainfall
  • 4°C minimum night-time temperature in October in Grand Junction4
    4°C min night temperature
  • 11 hours of daylight per day in October in Grand Junction11
    11 hours of daylight per day
  • No heat & humidity in October in Grand Junction0
    No heat & humidity
  • 25 mm monthly rainfall in October in Grand Junction25
    25 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in October in Grand Junction5
    5 (Moderate) UV index

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The October weather guide for Colorado (Grand Junction) 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 Grand Junction in October?

Daytime temperatures usually reach 20°C in Grand Junction in October, falling to 4°C at night.

How sunny is it in Grand Junction in October?

There are normally 8 hours of bright sunshine each day in Grand Junction in October - that's 74% of daylight hours.

Does it rain in Grand Junction in October?

There are usually 5 days with some rain in Grand Junction in October and the average monthly rainfall is 25mm.

Grand Junction October sunrise & sunset times

Browse the sunrise and sunset times for Grand Junction in October 2025. Select a month to view Grand Junction sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:11 17:56
Thursday, 16th October 2025 06:25 17:34
Friday, 31st October 2025 06:41 17:14

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