Weather in the USA in August 2018

Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in USA in August. Check more long-term weather averages for USA in August before you book your next holiday to USA in 2018. The August weather averages shown below are for Washington.

Key weather averages for USA in August

  • 30°C maximum daytime temperature in August in USA (Washington)30
    30°C max day temperature
  • 8 hours of sunshine per day (62% of daylight hours) in August in USA8
    8 hours of sunshine per day
  • 9 days with some rainfall in August in USA (Washington)9
    9 days with some rainfall
  • 20°C minimum night-time temperature in August in USA (Washington)20
    20°C min night temperature
  • 14 hours of daylight per day in August in USA (Washington)14
    14 hours of daylight per day
  • High heat & humidity in August in USA (Washington)H
    High heat & humidity
  • 103 mm monthly rainfall in August in USA (Washington)103
    103 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in USA (Washington)8
    8 (Very High) UV index

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

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

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Guide to USA weather in August

The average maximum daytime temperature in USA in August is a hot 30°C (86°F) with high heat & humidity. The average night-time temperature is usually a comfortable 20°C (68°F). There are usually 8 hours of bright sunshine each day, which represents 62% of the 14 hours of daylight.

Expect 103mm (4.1 inches) of rainfall across the whole of August with 9 days with some rain falling. Maximum UV levels will be very high (8 UV index) at midday when the skies are clear.

The weather in USA in August is represented by Washington.

USA sunrise & sunset times for August 2018

Browse the sunrise & sunset times for USA in August 2018. 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
Wednesday, 1st August 2018 05:09 19:19
Thursday, 2nd August 2018 05:10 19:18
Friday, 3rd August 2018 05:11 19:17
Saturday, 4th August 2018 05:12 19:16
Sunday, 5th August 2018 05:13 19:15
Monday, 6th August 2018 05:13 19:14
Tuesday, 7th August 2018 05:14 19:13
Wednesday, 8th August 2018 05:15 19:11
Thursday, 9th August 2018 05:16 19:10
Friday, 10th August 2018 05:17 19:09
Saturday, 11th August 2018 05:18 19:08
Sunday, 12th August 2018 05:19 19:07
Monday, 13th August 2018 05:20 19:05
Tuesday, 14th August 2018 05:21 19:04
Wednesday, 15th August 2018 05:22 19:03
Thursday, 16th August 2018 05:23 19:01
Friday, 17th August 2018 05:23 19:00
Saturday, 18th August 2018 05:24 18:59
Sunday, 19th August 2018 05:25 18:57
Monday, 20th August 2018 05:26 18:56
Tuesday, 21st August 2018 05:27 18:55
Wednesday, 22nd August 2018 05:28 18:53
Thursday, 23rd August 2018 05:29 18:52
Friday, 24th August 2018 05:30 18:50
Saturday, 25th August 2018 05:31 18:49
Sunday, 26th August 2018 05:32 18:47
Monday, 27th August 2018 05:32 18:46
Tuesday, 28th August 2018 05:33 18:44
Wednesday, 29th August 2018 05:34 18:43
Thursday, 30th August 2018 05:35 18:41
Friday, 31st August 2018 05:36 18:40
  • Book special offers on Virgin Atlantic flights to the USA
  • Flights depart from Heathrow, Gatwick, Manchester & Glasgow
  • Return flights to the USA from £422

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