St Louis weather in August 2019

  • 31°C maximum daytime temperature in August in St Louis31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in August in St Louis8
    8 days with some rainfall
  • 19°C minimum night-time temperature in August in St Louis19
    19°C min night temperature
  • 14 hours of daylight per day in August in St Louis14
    14 hours of daylight per day
  • High heat & humidity in August in St LouisH
    High heat & humidity
  • 75 mm monthly rainfall in August in St Louis75
    75 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in St Louis9
    9 (Very High) UV index

Going to St Louis? Find the best month to visit St Louis based on the weather.

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Expect 31°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in St Louis in August. Check more long-term weather averages for St Louis in August before you book your next holiday to Missouri in 2019/2020.

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More about St Louis

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The August weather guide for St Louis, Missouri 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 St Louis weather in August

The average maximum daytime temperature in St Louis in August is a hot 31°C (88°F) with high heat & humidity. The average night-time temperature is usually a comfortable 19°C (66°F). There are usually 9 hours of bright sunshine each day, which represents 65% of the 14 hours of daylight.

Expect 75mm (3.0 inches) of rainfall across the whole of August with 8 days with some rain falling. Maximum UV levels will be very high (9 UV index) at midday when the skies are clear.

St Louis sunrise & sunset times for August 2019

Browse the sunrise & sunset times for St Louis in August 2019. Select a month to view St Louis sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 06:02 20:11
Friday, 2nd August 2019 06:03 20:10
Saturday, 3rd August 2019 06:04 20:09
Sunday, 4th August 2019 06:05 20:08
Monday, 5th August 2019 06:06 20:07
Tuesday, 6th August 2019 06:07 20:06
Wednesday, 7th August 2019 06:07 20:05
Thursday, 8th August 2019 06:08 20:04
Friday, 9th August 2019 06:09 20:03
Saturday, 10th August 2019 06:10 20:02
Sunday, 11th August 2019 06:11 20:00
Monday, 12th August 2019 06:12 19:59
Tuesday, 13th August 2019 06:13 19:58
Wednesday, 14th August 2019 06:14 19:57
Thursday, 15th August 2019 06:15 19:55
Friday, 16th August 2019 06:16 19:54
Saturday, 17th August 2019 06:16 19:53
Sunday, 18th August 2019 06:17 19:51
Monday, 19th August 2019 06:18 19:50
Tuesday, 20th August 2019 06:19 19:49
Wednesday, 21st August 2019 06:20 19:47
Thursday, 22nd August 2019 06:21 19:46
Friday, 23rd August 2019 06:22 19:44
Saturday, 24th August 2019 06:23 19:43
Sunday, 25th August 2019 06:24 19:42
Monday, 26th August 2019 06:24 19:40
Tuesday, 27th August 2019 06:25 19:39
Wednesday, 28th August 2019 06:26 19:37
Thursday, 29th August 2019 06:27 19:36
Friday, 30th August 2019 06:28 19:34
Saturday, 31st August 2019 06:29 19:33
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