Weather in Grand Junction in September 2017

Check the weather in Grand Junction in September before you book your next holiday in Colorado. Long-term weather averages give the best indication of the weather in September 2017 and include figures for temperature, sunshine and rainfall plus sunrise & sunset times for Grand Junction, Colorado, United States.

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

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).

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

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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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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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