Weather in the United States in September 2017

Check the weather in the United States in September before you book your next holiday. 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 the United States.

The September weather guide for the United States shown below is for Washington.

Weather in United States in September

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

  • 26°C maximum daytime temperature in September in United States (Washington)26
    26°C max day temperature
  • 7 hours of sunshine per day (60% of daylight hours) in September in United States7
    7 hours of sunshine per day
  • 7 days with some rainfall in September in United States (Washington)7
    7 days with some rainfall
  • 15°C minimum night-time temperature in September in United States (Washington)15
    15°C min night temperature
  • 12 hours of daylight per day in September in United States (Washington)12
    12 hours of daylight per day
  • Low heat & humidity in September in United States (Washington)L
    Low heat & humidity
  • 87 mm monthly rainfall in September in United States (Washington)87
    87 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in United States (Washington)7
    7 (High) UV index

The average maximum daytime temperature in United States 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 United States in September is represented by Washington.

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

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United States sunrise & sunset times for September 2017

Browse the sunrise & sunset times for United States in September 2017. Select a month to view United States sunrise & sunset times for the next twelve months. The United States 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 United States 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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