Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
Saint Louis's weather in October involves a decrease in the average high-temperature, moving down from September's moderately hot 77.4°F (25.2°C) to a comfortable 65.3°F (18.5°C). During October, Saint Louis's temperature falls to a steady low-temperature average of 47.3°F (8.5°C).Humidity
The months with the highest humidity in Saint Louis are October and December, with an average relative humidity of 78%.Rainfall
In October, the rain falls for 12.2 days. Throughout October, 2.64" (67mm) of precipitation is accumulated. In Saint Louis, during the entire year, the rain falls for 162.2 days and collects up to 31.1" (790mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Saint Louis, during the entire year, snow falls for 21.9 days and aggregates up to 14.88" (378mm) of snow.Daylight
In October, the average length of the day is 11h and 10min.On the first day of October, sunrise is at 7:07 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 6:11 pm EDT.
Sunshine
The average sunshine in October is 5.7h.UV index
The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In October, an average UV index of 3 transforms into the following instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Saint Louis in October?
What are the most humid months?
What is the average humidity in October?
How much does it rain in October?
When does it start to snow?
What is the average length of the day in October?
What time are sunrise and sunset in October in Saint Louis?
How many hours of sunshine does Saint Louis have in October?
What is the UV index reading in October?
Average temperature in October
Saint Louis, VA
- Average high temperature in October: 65.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in October: 47.3°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in October
Saint Louis, VA
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in October
Saint Louis, VA
- Average wind speed in October: 6mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in October
Saint Louis, VA
- Average humidity in October: 78%
The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in October
Saint Louis, VA
- Average rainfall in October: 2.64"
The wettest months (with the highest rainfall) are May and August (3.35").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in October
Saint Louis, VA
- Average rainfall days in October: 12.2 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (10.1 days).
Average snowfall in October
Saint Louis, VA
- Average snowfall in October: 0.04"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Saint Louis, VA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Saint Louis, VA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in October: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in October
Saint Louis, VA
- Average sunshine days in October: 16.7 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in October
Saint Louis, VA
- Average UV index in October: 3
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Saint Louis, VA
- Average cloud cover in October: 39
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in October
Saint Louis, VA
- Average visibility in October: 5mi
The months with the highest visibility are February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are January, May, September, October and December (5mi).
Saint Louis, Virginia, USA
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