St. Louis (Missouri) in august: average Weather, Temperature and Climate
Weather in St. Louis (Missouri) in august 2025
The weather in St. Louis (Missouri) in august comes from statistical datas on the past years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
good weather UV index: 7
Weather at 6am
70°F
Clear/Sunny
44% of time
17%
16%
12%
Weather at 12pm
86°F
Clear/Sunny
48% of time
21%
17%
9%
Weather at 6pm
81°F
Clear/Sunny
56% of time
18%
13%
9%
Weather at 3am
70°F
45%
16%
15%
14%
Evolution of daily average temperature and precipitation in St. Louis (Missouri) in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in St. Louis (Missouri) in august.
The climate of St. Louis (Missouri) in august is good
The climate in august in St. Louis (Missouri) is wet (with 7in of rainfall over 9 days). This is better than the previous month since in july it receives an average of 7.2in of precipitation over 10 days.
The climate quite pleasant in this location august. The thermometer averaged maximum of 88°F. On average, the recorded minimum temperature is 70°F. Thus, the mean temperature average on this month of august in St. Louis (Missouri) is 79°F. Note that these seasonal averages are in contrast with those observed in St. Louis (Missouri) in the month of august with a maximum record of 104°F in 2010 and a minimum record of 54°F in 2009. You You can hope to have about 17 days with temperatures over 86°F, or 55 of time.
In august in St. Louis (Missouri), the days on average last 13:40. The sun rises at 05:15 and sets at 18:55.
With a good climate, the month of august is advisable to go in this locality.
Seasonal average climate and temperature of St. Louis (Missouri) in august
Check below seasonal norms These statistics are generated from the weather statements earlier years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 79°F | ||||
| Highest temperature | 88°F | ||||
| Lowest temperature | 70°F | ||||
| Highest record temperature | 104°F (2010) | ||||
| Lowest record temperature | 54°F (2009) | ||||
| Number of days at +86°F | 17 day(s) (55%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 13km/h | ||||
| Wind temperature | 70°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 7in | ||||
| Number of days with rainfall | 9 day(s) (29%) | ||||
| Record daily rainfall | 4.1in (2016) | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 9.02km | ||||
| Cloud cover | 25% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 14 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:15 | ||||
| Time of sunset | 18:55 | ||||
| Length of day | 13:40 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last august?
Here is the day by day recorded weather in St. Louis (Missouri) in august 2024:
77°F to 97°F
74°F to 88°F
70°F to 88°F
72°F to 92°F
74°F to 95°F
76°F to 97°F
67°F to 79°F
67°F to 86°F
63°F to 77°F
59°F to 81°F
63°F to 85°F
65°F to 74°F
63°F to 77°F
67°F to 81°F
72°F to 90°F
72°F to 94°F
68°F to 92°F
67°F to 85°F
65°F to 83°F
59°F to 81°F
58°F to 79°F
56°F to 79°F
59°F to 90°F
74°F to 95°F
72°F to 86°F
74°F to 101°F
76°F to 103°F
77°F to 103°F
74°F to 103°F
76°F to 97°F
72°F to 85°F
Map: other cities in the United States (USA) in august
Cities near St. Louis (Missouri):
| Missouri in august | good weather |
| Illinois in august | good weather |
| Indianapolis in august | good weather |
| Memphis in august | good weather |
| Kansas City in august | good weather |
| Louisville (Kentucky) in august | good weather |
| Arkansas in august | good weather |
| Nashville in august | good weather |
| Chicago in august | good weather |
| Des Moines in august | good weather |
| Cincinnati in august | good weather |
| Wisconsin in august | good weather |
Click over cities on the map for information about the weather in august.
St. Louis (Missouri)
perfect weather
good
tolerable
bad
very bad
Weather data for St. Louis (Missouri) in august:
Weather data for St. Louis (Missouri) for august are derived from an average of the weather forecast since 2009 in St. Louis (Missouri). There is a margin of error and these forecasts are to be considered as general information only. The weather in St. Louis (Missouri) can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to St. Louis (Missouri).