St. Louis (MO)
April
Weather in St. Louis, Missouri for April 2026
Your guide to St. Louis weather in April - trends and predictions
Flood Warning - See hour by hour.
So far, April 2026 in St. Louis shows a warmer trend than usual by 3.5 °F.
The forecast for the coming days of April 2026 predicts a temperature of 20.7 °F , which is warmer than usual.
In general, the average temperature in St. Louis at the beginning of April is 17.3 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 20 °F by the end of April.
St. Louis experiences heavy rainfall in April, with over 20 rainy days and an average total precipitation 204 mm.
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Temperatures
Rain 🌧️
More
6
Dry days
24
Rainy days
0
Snow days
18°/8°
Temperatures
22 km/h
Avg max wind
71 %
Avg humidity
St. Louis Weather April
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Temperatures trend during April in St. Louis
See the weather trend as well as the moving average line
April weather in St. Louis day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Apr. 1 |  Overcast | 16° /6° | 4.3 mm | 4 | |
| Apr. 2 |  Sunny | 19° /6° | 13.1 mm | 5 | |
| Apr. 3 |  Partly cloudy | 18° /7° | 3.1 mm | 5 | |
| Apr. 4 | Overcast | 20° /9° | 16.1 mm | 4 | |
| Apr. 5 |  Cloudy | 17° /6° | 29.8 mm | 4 | |
| Apr. 6 | Partly cloudy | 15° /5° | 1.2 mm | 4 | |
| Apr. 7 | Overcast | 16° /5° | 4.1 mm | 5 | |
| Apr. 8 | Overcast | 16° /4° | 1.2 mm | 4 | |
| Apr. 9 | Partly cloudy | 19° /7° | 0.1 mm | 5 | |
| Apr. 10 |  Moderate or heavy rain shower | 17° /8° | 11.7 mm | 4 | |
| Apr. 11 | Sunny | 18° /8° | 12.1 mm | 4 | |
| Apr. 12 | Sunny | 21° /9° | 0.2 mm | 5 | |
| Apr. 13 |  Thundery outbreaks possible | 23° /10° | 5.4 mm | 5 | |
| Apr. 14 | Overcast | 21° /11° | 0 mm | 4 | |
| Apr. 15 | Partly cloudy | 21° /11° | 5.2 mm | 5 | |
| Apr. 16 | Overcast | 20° /9° | 7.2 mm | 5 | |
| Apr. 17 |  Heavy rain at times | 19° /9° | 2.1 mm | 5 | |
| Apr. 18 | Overcast | 20° /8° | 6.7 mm | 5 | |
| Apr. 19 | Sunny | 19° /7° | 12 mm | 5 | |
| Apr. 20 | Moderate or heavy rain shower | 17° /7° | 10.9 mm | 5 | |
| Apr. 21 | Overcast | 19° /8° | 3 mm | 5 | |
| Apr. 22 |  Patchy rain possible | 19° /7° | 0.1 mm | 5 | |
| Apr. 23 | Overcast | 21° /10° | 0.3 mm | 6 | |
| Apr. 24 | Moderate or heavy rain shower | 19° /9° | 14.2 mm | 5 | |
| Apr. 25 | Partly cloudy | 20° /9° | 2.1 mm | 5 | |
| Apr. 26 | Overcast | 19° /9° | 2.6 mm | 5 | |
| Apr. 27 | Partly cloudy | 22° /11° | 6.7 mm | 5 | |
| Apr. 28 | Patchy rain possible | 23° /13° | 7.5 mm | 6 | |
| Apr. 29 |  Moderate rain | 18° /11° | 7.4 mm | 7.2 | |
| Apr. 30 | Sunny | 19° /8° | 0 mm | 7.9 | |
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Important Notice
Our weather forecast for St. Louis in April 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 April - FAQ
What are the expected maximum and minimum temperatures in St. Louis during April?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in St. Louis during April?
Significant rainfall exceeding 204 mm is expected in St. Louis during April, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
Will it snow in St. Louis in April 2026?
St. Louis typically sees 0.024 cm of snowfall during April.
What are the typical wind conditions in St. Louis during April?
The average wind speed in St. Louis during April is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
April rainfall patterns in St. Louis
Explore the daily rainfall trends and prepare for St. Louiss April weather 💧
Typically, St. Louis has 24 rainy days in April with a total of 204 mm of rainfall.
UV exposure in St. Louis during April
Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️
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