City of Saint Louis (St. Louis)
August
Weather in City of Saint Louis, Missouri for August 2025
Your guide to City of Saint Louis weather in August - trends and predictions
Flood Warning - See hour by hour.
The forecast for the first days of August 2025 in City of Saint Louis predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in City of Saint Louis at the beginning of August is 29.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 33.6 °F by the end of August.
City of Saint Louis experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 137.9 mm.
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Temperatures
Rain 🌧️
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9
Dry days
22
Rainy days
0
Snow days
31°/20°
Temperatures
15 km/h
Avg max wind
67 %
Avg humidity
City of Saint Louis Weather August
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Temperatures trend during August in City of Saint Louis
See the weather trend as well as the moving average line
August weather in City of Saint Louis day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Overcast | 31° /19° | 0 mm | 2 | |
| Aug. 2 |  Partly cloudy | 26° /17° | 0 mm | 2.2 | |
| Aug. 3 |  Sunny | 27° /16° | 0 mm | 0 | |
| Aug. 4 |  Patchy rain possible | 31° /19° | 1.4 mm | 5 | |
| Aug. 5 |  Moderate rain | 27° /21° | 5.5 mm | 5 | |
| Aug. 6 | Patchy rain possible | 30° /20° | 0.6 mm | 5 | |
| Aug. 7 | Patchy rain possible | 32° /21° | 1.8 mm | 6 | |
| Aug. 8 | Patchy rain possible | 32° /21° | 3.3 mm | 6 | |
| Aug. 9 | Patchy rain possible | 32° /23° | 0.4 mm | 6 | |
| Aug. 10 | Sunny | 36° /23° | 0 mm | 7 | |
| Aug. 11 | Sunny | 35° /23° | 0 mm | 7 | |
| Aug. 12 | Sunny | 28° /19° | 0 mm | 6 | |
| Aug. 13 | Sunny | 23° /15° | 0 mm | 5 | |
| Aug. 14 | Partly cloudy | 30° /20° | 3.4 mm | 7 | |
| Aug. 15 | Sunny | 28° /18° | 3 mm | 7 | |
| Aug. 16 | Patchy rain possible | 28° /18° | 8.7 mm | 6 | |
| Aug. 17 | Partly cloudy | 30° /18° | 0.9 mm | 7 | |
| Aug. 18 | Partly cloudy | 30° /17° | 0 mm | 7 | |
| Aug. 19 | Sunny | 31° /18° | 0 mm | 8 | |
| Aug. 20 | Patchy rain possible | 32° /18° | 0.9 mm | 7 | |
| Aug. 21 | Patchy rain possible | 31° /19° | 4.9 mm | 7 | |
| Aug. 22 | Patchy rain possible | 31° /19° | 0.2 mm | 7 | |
| Aug. 23 |  Moderate or heavy rain shower | 34° /19° | 2.3 mm | 8 | |
| Aug. 24 | Sunny | 35° /22° | 0 mm | 8 | |
| Aug. 25 | Sunny | 35° /22° | 1.1 mm | 8 | |
| Aug. 26 | Moderate or heavy rain shower | 35° /22° | 2.2 mm | 8 | |
| Aug. 27 | Patchy rain possible | 35° /21° | 0.4 mm | 8 | |
| Aug. 28 | Patchy rain possible | 34° /20° | 0.8 mm | 8 | |
| Aug. 29 | Moderate or heavy rain shower | 35° /20° | 4.5 mm | 8 | |
| Aug. 30 | Moderate or heavy rain shower | 32° /20° | 8.5 mm | 7 | |
| Aug. 31 |  Heavy rain at times | 29° /17° | 2.8 mm | 7 | |
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Important Notice
Our weather forecast for City of Saint 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 City of Saint Louis forecast closer to your planned date for the most up-to-date weather information.
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City of Saint Louis in August - FAQ
What are the expected maximum and minimum temperatures in City of Saint 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 City of Saint Louis during August?
Significant rainfall exceeding 137.9 mm is expected in City of Saint Louis during August, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in City of Saint Louis during August?
The average wind speed in City of Saint Louis during August is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in City of Saint Louis
Explore the daily rainfall trends and prepare for City of Saint Louiss August weather 💧
UV exposure in City of Saint Louis during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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