St. Louis (MO)
August
Weather in St. Louis, Missouri for August 2027
Your guide to St. Louis weather in August - trends and predictions
In general, the average temperature in St. Louis at the beginning of August is 30.4 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 32.6 °C by the end of August.
St. Louis experiences moderate rainfall in August, with an average of 10 rainy days and a total precipitation of 134.2 mm.
Is August a good time to visit St. Louis? check out the best time to travel to St. Louis page.
✨ Is August a good time to visit St. Louis? – Ask the AI Weatherman
Temperatures
Rain 🌧️
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21
Dry days
10
Rainy days
0
Snow days
31°/20°
Temperatures
15 km/h
Avg max wind
68 %
Avg humidity
St. Louis Weather August
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Temperatures trend during August in St. Louis
See the weather trend as well as the moving average line
August weather in St. Louis day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Light rain | 31° /20° | 3.2 mm | 7 | |
| Aug. 2 |  Moderate rain | 29° /19° | 15.5 mm | 7 | |
| Aug. 3 | Moderate rain | 30° /20° | 12 mm | 8 | |
| Aug. 4 | Light rain | 30° /20° | 3.1 mm | 8 | |
| Aug. 5 | Light rain | 32° /20° | 5.8 mm | 8 | |
| Aug. 6 | Moderate rain | 31° /21° | 12.6 mm | 8 | |
| Aug. 7 |  Patchy rain possible | 31° /20° | 2.1 mm | 8 | |
| Aug. 8 | Light rain | 32° /21° | 2.6 mm | 8 | |
| Aug. 9 | Moderate rain | 31° /21° | 10.5 mm | 8 | |
| Aug. 10 |  Partly cloudy | 32° /20° | 0.6 mm | 8 | |
| Aug. 11 | Light rain | 33° /21° | 2.5 mm | 8 | |
| Aug. 12 |  Moderate or heavy rain shower | 31° /22° | 6.4 mm | 8 | |
| Aug. 13 | Light rain | 30° /21° | 3.7 mm | 7 | |
| Aug. 14 | Light rain | 30° /22° | 4 mm | 8 | |
| Aug. 15 | Patchy rain possible | 30° /20° | 2.2 mm | 7 | |
| Aug. 16 | Light rain | 30° /20° | 8.2 mm | 7 | |
| Aug. 17 | Light rain | 31° /20° | 7.5 mm | 7 | |
| Aug. 18 | Light rain | 31° /19° | 5.4 mm | 8 | |
| Aug. 19 | Light rain | 31° /20° | 5.3 mm | 7 | |
| Aug. 20 | Patchy rain possible | 31° /20° | 2.4 mm | 7 | |
| Aug. 21 | Light rain | 30° /19° | 3.3 mm | 7 | |
| Aug. 22 | Patchy rain possible | 30° /20° | 0.1 mm | 7 | |
| Aug. 23 | Patchy rain possible | 32° /19° | 1.6 mm | 8 | |
| Aug. 24 |  Sunny | 33° /20° | 0.1 mm | 8 | |
| Aug. 25 | Sunny | 33° /21° | 0.7 mm | 8 | |
| Aug. 26 | Patchy rain possible | 34° /21° | 1.5 mm | 8 | |
| Aug. 27 | Patchy rain possible | 33° /19° | 0.3 mm | 8 | |
| Aug. 28 | Partly cloudy | 32° /19° | 0.5 mm | 8 | |
| Aug. 29 | Light rain | 34° /20° | 3 mm | 8 | |
| Aug. 30 | Light rain | 32° /20° | 5.6 mm | 7 | |
| Aug. 31 | Patchy rain possible | 31° /18° | 1.9 mm | 7 | |
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Important Notice
Our weather forecast for St. Louis in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the St. Louis forecast closer to your planned date for the most up-to-date weather information.
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St. Louis in August - FAQ
What are the expected maximum and minimum temperatures in St. Louis during August?
Expect warm days with temperatures around 31°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in St. Louis during August?
Significant rainfall exceeding 134.2 mm is expected in St. Louis during August, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in St. Louis during August?
The average wind speed in St. Louis during August is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in St. Louis
Explore the daily rainfall trends and prepare for St. Louiss August weather 💧
Typically, St. Louis has 10 rainy days in August with a total of 134.2 mm of rainfall.
UV exposure in St. Louis during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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