Saint Louis County (Eureka)
October
Weather in Saint Louis County, Missouri for October 2026
Your guide to Saint Louis County weather in October - trends and predictions
In general, the average temperature in Saint Louis County at the beginning of October is 26.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °F by the end of October.
Precipitation in Saint Louis County during October is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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30
Dry days
1
Rainy days
0
Snow days
23°/11°
Temperatures
15 km/h
Avg max wind
56 %
Avg humidity
Saint Louis County Weather October
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Temperatures trend during October in Saint Louis County
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October weather in Saint Louis County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Fog | 26° /16° | 0 mm | 6 | |
| Oct. 2 |  Sunny | 27° /12° | 0 mm | 7 | |
| Oct. 3 | Sunny | 27° /14° | 0 mm | 7 | |
| Oct. 4 |  Overcast | 30° /17° | 0 mm | 7 | |
| Oct. 5 | Sunny | 30° /16° | 0 mm | 8 | |
| Oct. 6 | Sunny | 28° /18° | 0 mm | 7 | |
| Oct. 7 | Sunny | 20° /12° | 0 mm | 5 | |
| Oct. 8 | Sunny | 22° /9° | 0 mm | 6 | |
| Oct. 9 | Sunny | 23° /9° | 0 mm | 7 | |
| Oct. 10 | Sunny | 25° /10° | 1.2 mm | 7 | |
| Oct. 11 | Sunny | 27° /14° | 0 mm | 7 | |
| Oct. 12 |  Partly cloudy | 28° /15° | 0 mm | 7 | |
| Oct. 13 |  Thundery outbreaks possible | 26° /16° | 0 mm | 6 | |
| Oct. 14 | Partly cloudy | 22° /11° | 0 mm | 6 | |
| Oct. 15 | Overcast | 22° /11° | 0 mm | 5 | |
| Oct. 16 | Sunny | 23° /8° | 0 mm | 7 | |
| Oct. 17 | Sunny | 22° /10° | 0 mm | 6 | |
| Oct. 18 | Sunny | 23° /11° | 26.6 mm | 6 | |
| Oct. 19 | Sunny | 21° /8° | 4.2 mm | 5 | |
| Oct. 20 | Sunny | 23° /8° | 0 mm | 6 | |
| Oct. 21 | Sunny | 21° /10° | 0 mm | 6 | |
| Oct. 22 | Partly cloudy | 22° /9° | 0 mm | 6 | |
| Oct. 23 | Sunny | 19° /11° | 0 mm | 5 | |
| Oct. 24 |  Cloudy | 18° /8° | 0 mm | 4 | |
| Oct. 25 | Thundery outbreaks possible | 20° /13° | 0 mm | 5 | |
| Oct. 26 | Partly cloudy | 16° /11° | 22.6 mm | 5 | |
| Oct. 27 | Overcast | 15° /9° | 0 mm | 4 | |
| Oct. 28 | Overcast | 18° /10° | 17.2 mm | 4 | |
| Oct. 29 | Cloudy | 20° /14° | 46.4 mm | 5 | |
| Oct. 30 | Overcast | 17° /12° | 0 mm | 4 | |
| Oct. 31 |  Moderate or heavy rain shower | 21° /11° | 21.8 mm | 5 | |
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Important Notice
Our weather forecast for Saint Louis County in October 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.
Change Month
Saint Louis County in October - FAQ
What are the expected maximum and minimum temperatures in Saint Louis County during October?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint Louis County during October?
In October, Saint Louis County can expect light to moderate rainfall, totaling 21.8 mm across approximately 1 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Saint Louis County during October?
The average wind speed in Saint Louis County during October is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Saint Louis County
Explore the daily rainfall trends and prepare for Saint Louis Countys October weather 💧
UV exposure in Saint Louis County during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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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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