October weather forecastSt. Louis, MO
October
Weather in October
October brings the full splendor of autumn to St. Louis with its vibrant foliage and crisp air. Temperatures maintain a steady drop, bestowing upon the city a temperate and clear climate throughout October. The temperature averages about 49°F (9.4°C), ideal for exploring the city's stunning autumn-accented landscapes. While rainfall is moderate, uninterrupted periods of sunshine facilitate various outdoor activities. The residents prepare for the impending winter season as daylight hours gradually reduce.Temperature
The arrival of October in St. Louis indicates a decrease in the average high-temperature, moving from a warm 80.2°F (26.8°C) in September to a pleasant 68.5°F (20.3°C). Throughout October, St. Louis anticipates an average low-temperature of 48.9°F (9.4°C).Humidity
In St. Louis, the average relative humidity in October is 68.7%.Rainfall
In October, in St. Louis, the rain falls for 8.7 days. Throughout October, 3.35" (85mm) of precipitation is accumulated. Throughout the year, in St. Louis, there are 112.6 rainfall days, and 40.94" (1040mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in St. Louis.Daylight
The average length of the day in October in St. Louis, Missouri, is 11h and 11min.On the first day of October in St. Louis, sunrise is at 6:57 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 6:01 pm CDT.
Sunshine
In October, the average sunshine in St. Louis is 6.7h.UV index
The average daily maximum UV index in October in St. Louis is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 4 in October transforms into this advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
St. Louis, MO
- Average high temperature in October: 68.5°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in October: 49°F
The month with the highest average low temperature is July (71°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average humidity in October
St. Louis, MO
- Average humidity in October: 68.7%
The month with the highest relative humidity is December (75.8%).
The month with the lowest relative humidity is April (63.5%).
Average rainfall in October
St. Louis, MO
- Average rainfall in October: 3.3"
The wettest month (with the highest rainfall) is May (4.7").
The driest month (with the least rainfall) is February (2.2").
Average rainfall days in October
St. Louis, MO
- Average rainfall days in October: 8.7 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is September (7.4 days).
Average snowfall in October
St. Louis, MO
- Average snowfall in October: 0"
The month with the highest snowfall is January (5.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
St. Louis, MO
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
St. Louis, MO
- Average daylight in October: 11h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in October: 6h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average UV index in October
St. Louis, MO
- Average UV index in October: 4
The months with the highest UV index are June, July and August (UV index 9).
The months with the lowest UV index are January and December (UV index 2).
