Saint Louis County (Eureka)
June
Weather in Saint Louis County, Missouri for June 2026
Your guide to Saint Louis County weather in June - trends and predictions
Extreme Heat Warning - See hour by hour.
Until now, June 2026 in Saint Louis County is slightly cooler than the historical average by -0.8 °F.
The forecast for the next days in Saint Louis County predicts a temperature of 35.1 °F, which is cooler than the historical average.
In general, the average temperature in Saint Louis County at the beginning of June is 27.7 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 34.4 °F by the end of June.
The climate of Saint Louis County in June is notably wet, with an average of 15 rainy days, and a total of 167.1 mm of precipitation.
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15
Dry days
15
Rainy days
0
Snow days
30°/19°
Temperatures
15 km/h
Avg max wind
72 %
Avg humidity
Saint Louis County Weather June
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Temperatures trend during June in Saint Louis County
See the weather trend as well as the moving average line
June weather in Saint Louis County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jun. 1 |  Light rain shower | 25° /16° | 3.1 mm | 6 | |
| Jun. 2 |  Sunny | 29° /17° | 0 mm | 9 | |
| Jun. 3 |  Patchy light rain with thunder | 30° /18° | 3.4 mm | 8 | |
| Jun. 4 |  Moderate or heavy rain with thunder | 27° /18° | 23.6 mm | 8 | |
| Jun. 5 |  Fog | 29° /19° | 8.8 mm | 8 | |
| Jun. 6 |  Partly cloudy | 27° /19° | 5.2 mm | 8 | |
| Jun. 7 | Partly cloudy | 27° /16° | 0.3 mm | 8 | |
| Jun. 8 | Light rain shower | 27° /18° | 21.7 mm | 6 | |
| Jun. 9 | Fog | 29° /18° | 3.7 mm | 8 | |
| Jun. 10 | Patchy rain possible | 28° /17° | 1.3 mm | 8 | |
| Jun. 11 | Partly cloudy | 30° /17° | 1.7 mm | 9 | |
| Jun. 12 | Sunny | 30° /18° | 5.4 mm | 9 | |
| Jun. 13 |  Thundery outbreaks possible | 29° /19° | 2.4 mm | 8 | |
| Jun. 14 | Patchy rain possible | 28° /19° | 0.5 mm | 8 | |
| Jun. 15 | Patchy rain possible | 28° /16° | 0 mm | 8 | |
| Jun. 16 | Thundery outbreaks possible | 28° /17° | 13.7 mm | 8 | |
| Jun. 17 | Thundery outbreaks possible | 33° /19° | 11.5 mm | 9 | |
| Jun. 18 |  Overcast | 29° /20° | 9.8 mm | 8 | |
| Jun. 19 | Patchy rain possible | 30° /18° | 0.1 mm | 9 | |
| Jun. 20 | Sunny | 32° /19° | 0.1 mm | 9 | |
| Jun. 21 | Partly cloudy | 33° /22° | 9.7 mm | 10 | |
| Jun. 22 | Sunny | 32° /22° | 0.1 mm | 8 | |
| Jun. 23 | Sunny | 33° /20° | 0.5 mm | 9 | |
| Jun. 24 | Sunny | 33° /21° | 0.6 mm | 10 | |
| Jun. 25 | Thundery outbreaks possible | 34° /21° | 12.3 mm | 8 | |
| Jun. 26 | Light rain shower | 30° /20° | 21.5 mm | 6 | |
| Jun. 27 | Mist | 31° /21° | 9.6 mm | 7 | |
| Jun. 28 | Sunny | 37° /23° | 0 mm | 10.6 | |
| Jun. 29 | Sunny | 38° /23° | 0 mm | 10.8 | |
| Jun. 30 | Sunny | 38° /23° | 0 mm | 10.7 | |
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Important Notice
Our weather forecast for Saint Louis County in June 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 June - FAQ
What are the expected maximum and minimum temperatures in Saint Louis County during June?
Expect warm days with temperatures around 30°, cooling to mild conditions of 19° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Saint Louis County during June?
Significant rainfall exceeding 167.1 mm is expected in Saint Louis County during June, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint Louis County during June?
The average wind speed in Saint Louis County during June is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
June rainfall patterns in Saint Louis County
Explore the daily rainfall trends and prepare for Saint Louis Countys June weather 💧
Typically, Saint Louis County has 15 rainy days in June with a total of 167.1 mm of rainfall.
UV exposure in Saint Louis County during June
Stay informed about UV levels for safe outdoor activities throughout the month of June ☀️
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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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