Weather in the USA in September 2019

  • 26°C maximum daytime temperature in September in USA (Washington)26
    26°C max day temperature
  • 7 hours of sunshine per day (60% of daylight hours) in September in USA7
    7 hours of sunshine per day
  • 7 days with some rainfall in September in USA (Washington)7
    7 days with some rainfall
  • 15°C minimum night-time temperature in September in USA (Washington)15
    15°C min night temperature
  • 12 hours of daylight per day in September in USA (Washington)12
    12 hours of daylight per day
  • Low heat & humidity in September in USA (Washington)L
    Low heat & humidity
  • 87 mm monthly rainfall in September in USA (Washington)87
    87 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in USA (Washington)7
    7 (High) UV index

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Expect 26°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in USA in September. Check more long-term weather averages for USA in September before you book your next holiday to USA in 2019/2020. The September weather averages shown above are for Washington.

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More about USA

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The September weather guide for USA, represented by Washington, 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 USA weather in September

The average maximum daytime temperature in USA in September is a warm 26°C (79°F) with low heat & humidity. The average night-time temperature is usually a comfortable 15°C (59°F). There are usually 7 hours of bright sunshine each day, which represents 60% of the 12 hours of daylight.

Expect 87mm (3.4 inches) of rainfall across the whole of September with 7 days with some rain falling. Maximum UV levels will be high (7 UV index) at midday when the skies are clear.

The weather in USA in September is represented by Washington.

USA sunrise & sunset times for September 2019

Browse the sunrise & sunset times for USA in September 2019. Select a month to view USA sunrise & sunset times for the next twelve months. The USA sunrise & sunset times shown below are for Washington.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st September 2019 05:37 18:39
Monday, 2nd September 2019 05:38 18:37
Tuesday, 3rd September 2019 05:39 18:36
Wednesday, 4th September 2019 05:39 18:34
Thursday, 5th September 2019 05:40 18:33
Friday, 6th September 2019 05:41 18:31
Saturday, 7th September 2019 05:42 18:29
Sunday, 8th September 2019 05:43 18:28
Monday, 9th September 2019 05:44 18:26
Tuesday, 10th September 2019 05:45 18:25
Wednesday, 11th September 2019 05:46 18:23
Thursday, 12th September 2019 05:47 18:21
Friday, 13th September 2019 05:47 18:20
Saturday, 14th September 2019 05:48 18:18
Sunday, 15th September 2019 05:49 18:17
Monday, 16th September 2019 05:50 18:15
Tuesday, 17th September 2019 05:51 18:13
Wednesday, 18th September 2019 05:52 18:12
Thursday, 19th September 2019 05:53 18:10
Friday, 20th September 2019 05:54 18:09
Saturday, 21st September 2019 05:55 18:07
Sunday, 22nd September 2019 05:56 18:05
Monday, 23rd September 2019 05:56 18:04
Tuesday, 24th September 2019 05:57 18:02
Wednesday, 25th September 2019 05:58 18:01
Thursday, 26th September 2019 05:59 17:59
Friday, 27th September 2019 06:00 17:57
Saturday, 28th September 2019 06:01 17:56
Sunday, 29th September 2019 06:02 17:54
Monday, 30th September 2019 06:03 17:53
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