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
The onset of October results in a decrease in the average high-temperature, receding from a warm 77.4°F (25.2°C) in September to a comfortable 65.3°F (18.5°C). In Saint Louis, the October nights cool down to an average low of 47.3°F (8.5°C).Humidity
October and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Saint Louis, in October, it is raining for 12.2 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, in Saint Louis, Virginia, there are 162.2 rainfall days, and 31.1" (790mm) of precipitation is accumulated.Snowfall
Months with snowfall in Saint Louis are January through April, October through December. October is the first month it typically snows in Saint Louis. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Saint Louis, there are 21.9 snowfall days, and 14.88" (378mm) of snow is accumulated.Daylight
The average length of the day in October in Saint Louis, Virginia, 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 estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 3 in October translates into these instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What are October temperatures in Saint Louis?
What is the most humid month in Saint Louis?
What is the average humidity in October in Saint Louis?
How much does it rain in Saint Louis in October?
When does it start to snow in Saint Louis?
How many hours of daylight does Saint Louis have in October?
When is the sunrise / 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 in Saint Louis?
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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