Saint Louis County (Eureka)
May
Weather in Saint Louis County, Missouri for May 2027
Your guide to Saint Louis County weather in May - trends and predictions
In general, the average temperature in Saint Louis County at the beginning of May is 20.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.6 °C by the end of May.
Saint Louis County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 296.4 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
22
Rainy days
0
Snow days
22°/13°
Temperatures
17 km/h
Avg max wind
74 %
Avg humidity
Saint Louis County Weather May
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Temperatures trend during May in Saint Louis County
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May weather in Saint Louis County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Thundery outbreaks possible | 22° /12° | 15.5 mm | 7 | |
| May 2 |  Patchy rain possible | 20° /11° | 3.5 mm | 7 | |
| May 3 | Patchy rain possible | 20° /9° | 34.4 mm | 6 | |
| May 4 |  Patchy light rain with thunder | 21° /12° | 9.8 mm | 5 | |
| May 5 | Patchy rain possible | 18° /10° | 6.8 mm | 4 | |
| May 6 | Light rain shower | 20° /10° | 1.7 mm | 4 | |
| May 7 |  Overcast | 22° /11° | 5.9 mm | 7 | |
| May 8 | Patchy light rain with thunder | 23° /11° | 3.6 mm | 7 | |
| May 9 | Patchy rain possible | 23° /11° | 0.8 mm | 7 | |
| May 10 | Patchy rain possible | 20° /9° | 0.1 mm | 5 | |
| May 11 |  Partly cloudy | 24° /10° | 0 mm | 7 | |
| May 12 | Partly cloudy | 25° /12° | 3.7 mm | 7 | |
| May 13 | Light rain shower | 22° /13° | 6.1 mm | 7 | |
| May 14 | Light rain shower | 23° /12° | 0.1 mm | 7 | |
| May 15 | Patchy rain possible | 27° /15° | 0.4 mm | 7 | |
| May 16 | Light rain shower | 26° /17° | 12.9 mm | 6 | |
| May 17 |  Moderate rain | 24° /16° | 9.3 mm | 7 | |
| May 18 |  Moderate or heavy rain shower | 24° /16° | 19.9 mm | 6 | |
| May 19 |  Sunny | 26° /16° | 5.5 mm | 6 | |
| May 20 | Thundery outbreaks possible | 24° /15° | 38.1 mm | 4 | |
| May 21 | Sunny | 28° /15° | 0.4 mm | 7 | |
| May 22 |  Moderate or heavy rain with thunder | 20° /15° | 7.5 mm | 4 | |
| May 23 | Thundery outbreaks possible | 23° /13° | 1.2 mm | 5 | |
| May 24 | Patchy light rain with thunder | 24° /15° | 23.4 mm | 6 | |
| May 25 | Overcast | 23° /14° | 0 mm | 7 | |
| May 26 |  Patchy light drizzle | 24° /14° | 37.3 mm | 7 | |
| May 27 | Patchy rain possible | 25° /16° | 7.9 mm | 6 | |
| May 28 | Sunny | 25° /15° | 0 mm | 7 | |
| May 29 | Partly cloudy | 22° /14° | 7.1 mm | 7 | |
| May 30 | Sunny | 26° /14° | 0.2 mm | 7 | |
| May 31 | Light rain | 27° /16° | 9.2 mm | 7 | |
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Important Notice
Our weather forecast for Saint Louis County in May 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 Saint Louis County forecast closer to your planned date for the most up-to-date weather information.
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Saint Louis County in May - FAQ
What are the expected maximum and minimum temperatures in Saint Louis County during May?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint Louis County during May?
Significant rainfall exceeding 296.4 mm is expected in Saint Louis County during May, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Louis County during May?
The average wind speed in Saint Louis County during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Saint Louis County
Explore the daily rainfall trends and prepare for Saint Louis Countys May weather 💧
Typically, Saint Louis County has 22 rainy days in May with a total of 296.4 mm of rainfall.
UV exposure in Saint Louis County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Saint Louis County?Get accurate weather forecasts for Saint Louis County, located at latitude 38.503 and longitude -90.628. Stay updated with localized weather information tailored for Saint Louis County.
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