Grand Junction weather in September 2019

  • 27°C maximum daytime temperature in September in Grand Junction27
    27°C max day temperature
  • 10 hours of sunshine per day
  • 6 days with some rainfall in September in Grand Junction6
    6 days with some rainfall
  • 10°C minimum night-time temperature in September in Grand Junction10
    10°C min night temperature
  • 12 hours of daylight per day in September in Grand Junction12
    12 hours of daylight per day
  • Low heat & humidity in September in Grand JunctionL
    Low heat & humidity
  • 21 mm monthly rainfall in September in Grand Junction21
    21 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Grand Junction7
    7 (High) UV index

Going to Grand Junction? Find the best month to visit Grand Junction based on the weather.

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Expect 27°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Grand Junction in September. Check more long-term weather averages for Grand Junction in September before you book your next holiday to Colorado in 2019/2020.

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More about Grand Junction

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The September weather guide for Grand Junction, 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.

Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Grand Junction weather in September

The average maximum daytime temperature in Grand Junction in September is a warm 27°C (81°F) with low heat & humidity. The average night-time temperature is usually a cool 10°C (50°F). There are usually 10 hours of bright sunshine each day, which represents 78% of the 12 hours of daylight.

Expect 21mm (0.8 inches) of rainfall across the whole of September with 6 days with some rain falling. Maximum UV levels will be high (7 UV index) at midday when the skies are clear.

Grand Junction sunrise & sunset times for September 2019

Browse the sunrise & sunset times for Grand Junction in September 2019. Select a month to view Grand Junction sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st September 2019 06:43 19:45
Monday, 2nd September 2019 06:44 19:43
Tuesday, 3rd September 2019 06:45 19:42
Wednesday, 4th September 2019 06:46 19:40
Thursday, 5th September 2019 06:46 19:39
Friday, 6th September 2019 06:47 19:37
Saturday, 7th September 2019 06:48 19:36
Sunday, 8th September 2019 06:49 19:34
Monday, 9th September 2019 06:50 19:32
Tuesday, 10th September 2019 06:51 19:31
Wednesday, 11th September 2019 06:52 19:29
Thursday, 12th September 2019 06:53 19:28
Friday, 13th September 2019 06:54 19:26
Saturday, 14th September 2019 06:55 19:24
Sunday, 15th September 2019 06:55 19:23
Monday, 16th September 2019 06:56 19:21
Tuesday, 17th September 2019 06:57 19:20
Wednesday, 18th September 2019 06:58 19:18
Thursday, 19th September 2019 06:59 19:16
Friday, 20th September 2019 07:00 19:15
Saturday, 21st September 2019 07:01 19:13
Sunday, 22nd September 2019 07:02 19:11
Monday, 23rd September 2019 07:03 19:10
Tuesday, 24th September 2019 07:04 19:08
Wednesday, 25th September 2019 07:04 19:07
Thursday, 26th September 2019 07:05 19:05
Friday, 27th September 2019 07:06 19:03
Saturday, 28th September 2019 07:07 19:02
Sunday, 29th September 2019 07:08 19:00
Monday, 30th September 2019 07:09 18:59
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