Weather in the USA in September 2017

Check the weather in USA in September based on long-term weather averages before you book your next holiday to USA in 2017. Expect daytime temperatures to reach 26°C with on average 7 hours of sunshine per day in USA in September.

What is the weather like in USA in September?
How hot is USA in September? 26°C
How sunny is USA in September? 7 sunshine hours/day
How wet is USA in September? 87 mm rainfall

Weather in USA in September

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

  • 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

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

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More about USA weather in September

The average maximum daytime temperature in USA in September is a warm 26°C (79°F) with low heat & humidity. 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 average night-time temperature is usually a comfortable 15°C (59°F). The weather in USA in September is represented by Washington.

USA sunrise & sunset times for September 2017

Browse the sunrise & sunset times for USA in September 2017. 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
Friday, 1st September 2017 05:37 18:38
Saturday, 2nd September 2017 05:38 18:36
Sunday, 3rd September 2017 05:39 18:35
Monday, 4th September 2017 05:40 18:33
Tuesday, 5th September 2017 05:41 18:32
Wednesday, 6th September 2017 05:42 18:30
Thursday, 7th September 2017 05:43 18:29
Friday, 8th September 2017 05:43 18:27
Saturday, 9th September 2017 05:44 18:25
Sunday, 10th September 2017 05:45 18:24
Monday, 11th September 2017 05:46 18:22
Tuesday, 12th September 2017 05:47 18:21
Wednesday, 13th September 2017 05:48 18:19
Thursday, 14th September 2017 05:49 18:17
Friday, 15th September 2017 05:50 18:16
Saturday, 16th September 2017 05:51 18:14
Sunday, 17th September 2017 05:51 18:13
Monday, 18th September 2017 05:52 18:11
Tuesday, 19th September 2017 05:53 18:09
Wednesday, 20th September 2017 05:54 18:08
Thursday, 21st September 2017 05:55 18:06
Friday, 22nd September 2017 05:56 18:05
Saturday, 23rd September 2017 05:57 18:03
Sunday, 24th September 2017 05:58 18:01
Monday, 25th September 2017 05:59 18:00
Tuesday, 26th September 2017 06:00 17:58
Wednesday, 27th September 2017 06:01 17:57
Thursday, 28th September 2017 06:01 17:55
Friday, 29th September 2017 06:02 17:54
Saturday, 30th September 2017 06:03 17:52
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Check USA 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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