Weather in Grand Junction in September 2017

Check the weather in Grand Junction in September based on long-term weather averages before you book your next holiday to Colorado in 2017. Expect daytime temperatures to reach 27°C with on average 10 hours of sunshine per day in Grand Junction in September.

What is the weather like in Grand Junction in September?
How hot is Grand Junction in September? 27°C
How sunny is Grand Junction in September? 10 sunshine hours/day
How wet is Grand Junction in September? 21 mm rainfall

Weather in Grand Junction in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

  • 27°C maximum daytime temperature in September in Grand Junction27
    27°C max day temperature
  • 10 hours of sunshine per day (78% of daylight hours) in September in Grand Junction10
    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

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

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More about Grand Junction

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More about 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. 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. The average night-time temperature is usually a cool 10°C (50°F). The weather in Grand Junction in September is represented by Grand Junction.

Grand Junction sunrise & sunset times for September 2017

Browse the sunrise & sunset times for Grand Junction in September 2017. Select a month to view Grand Junction sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st September 2017 06:43 19:44
Saturday, 2nd September 2017 06:44 19:43
Sunday, 3rd September 2017 06:45 19:41
Monday, 4th September 2017 06:46 19:40
Tuesday, 5th September 2017 06:47 19:38
Wednesday, 6th September 2017 06:48 19:36
Thursday, 7th September 2017 06:49 19:35
Friday, 8th September 2017 06:50 19:33
Saturday, 9th September 2017 06:50 19:32
Sunday, 10th September 2017 06:51 19:30
Monday, 11th September 2017 06:52 19:28
Tuesday, 12th September 2017 06:53 19:27
Wednesday, 13th September 2017 06:54 19:25
Thursday, 14th September 2017 06:55 19:24
Friday, 15th September 2017 06:56 19:22
Saturday, 16th September 2017 06:57 19:20
Sunday, 17th September 2017 06:58 19:19
Monday, 18th September 2017 06:59 19:17
Tuesday, 19th September 2017 06:59 19:16
Wednesday, 20th September 2017 07:00 19:14
Thursday, 21st September 2017 07:01 19:12
Friday, 22nd September 2017 07:02 19:11
Saturday, 23rd September 2017 07:03 19:09
Sunday, 24th September 2017 07:04 19:07
Monday, 25th September 2017 07:05 19:06
Tuesday, 26th September 2017 07:06 19:04
Wednesday, 27th September 2017 07:07 19:03
Thursday, 28th September 2017 07:08 19:01
Friday, 29th September 2017 07:09 18:59
Saturday, 30th September 2017 07:10 18:58
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  • Flights depart from London Heathrow Airport
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Grand Junction weather by month

Check Grand Junction weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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