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Missouri United States

Weather in Saint Louis County for October 2025

Your guide to Saint Louis County weather in October - trends and predictions

    Temperatures

  • In general, the average temperature in Saint Louis County at the beginning of October is 25.1 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 22.7 °F by the end of October.

  • Rain 🌧️

  • Precipitation in Saint Louis County during October is a rare event, with an average of fewer than 2 rainy days.

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Average dry days
30
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/11°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
57 %
Avg humidity

Saint Louis County Weather October

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Temperatures trend during October in Saint Louis County

See the weather trend as well as the moving average line

October weather day by day

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Date Weather Temperatures Rain UV More
Oct. 1 Fog
Fog
24° /15° 0 mm 5
Oct. 2 Sunny
Sunny
22° /7° 0 mm 6
Oct. 3 Sunny
Sunny
24° /9° 0 mm 6
Oct. 4 Overcast
Overcast
29° /15° 0 mm 6
Oct. 5 Sunny
Sunny
31° /16° 0 mm 8
Oct. 6 Sunny
Sunny
27° /18° 0 mm 7
Oct. 7 Sunny
Sunny
19° /9° 0 mm 5
Oct. 8 Sunny
Sunny
22° /7° 0 mm 6
Oct. 9 Sunny
Sunny
25° /9° 0 mm 7
Oct. 10 Sunny
Sunny
27° /12° 0 mm 7
Oct. 11 Sunny
Sunny
29° /13° 0 mm 7
Oct. 12 Partly cloudy
Partly cloudy
32° /17° 0 mm 8
Oct. 13 Thundery outbreaks possible
Thundery outbreaks possible
26° /16° 0 mm 6
Oct. 14 Partly cloudy
Partly cloudy
14° /6° 0 mm 4
Oct. 15 Overcast
Overcast
14° /7° 0 mm 3
Oct. 16 Sunny
Sunny
16° /1° 0 mm 5
Oct. 17 Sunny
Sunny
18° /4° 0 mm 5
Oct. 18 Sunny
Sunny
19° /6° 0 mm 5
Oct. 19 Sunny
Sunny
23° /7° 0 mm 6
Oct. 20 Sunny
Sunny
24° /8° 0 mm 6
Oct. 21 Sunny
Sunny
23° /11° 0 mm 6
Oct. 22 Partly cloudy
Partly cloudy
26° /11° 0 mm 7
Oct. 23 Sunny
Sunny
20° /13° 0 mm 6
Oct. 24 Cloudy
Cloudy
19° /10° 0 mm 4
Oct. 25 Thundery outbreaks possible
Thundery outbreaks possible
26° /16° 0 mm 6
Oct. 26 Partly cloudy
Partly cloudy
20° /12° 0 mm 6
Oct. 27 Overcast
Overcast
17° /8° 0 mm 4
Oct. 28 Overcast
Overcast
23° /9° 0 mm 5
Oct. 29 Cloudy
Cloudy
28° /20° 0 mm 6
Oct. 30 Overcast
Overcast
24° /19° 0 mm 5
Oct. 31 Moderate or heavy rain shower
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.

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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Location coordinates 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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