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 beginning of October involves a decrease in the average high-temperature, transitioning from a warm 80.2°F (26.8°C) in September to a comfortable 66.6°F (19.2°C). Saint Clair cools down to an average low-temperature of 48.2°F (9°C) throughout the month of October.Humidity
October is the least humid month in Saint Clair, with an average relative humidity of 72%.Rainfall
In October, the rain falls for 9.2 days. Throughout October, 1.65" (42mm) of precipitation is accumulated. In Saint Clair, during the entire year, the rain falls for 126.7 days and collects up to 20.63" (524mm) of precipitation.Snowfall
In Saint Clair, snow does not fall in April through October.Daylight
In October, the average length of the day is 11h and 11min.On the first day of October, sunrise is at 7:00 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 6:05 pm CDT.
Sunshine
In October, the average sunshine is 5.9h.UV index
The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 3 during October translates into the following guidance:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the least humid month?
What is the average humidity in October?
How much does it rain in October?
When it does not snow?
Does it snow in October?
How many hours of daylight does Saint Clair have in October?
When is the sunrise / sunset in October?
How many hours of sunshine does Saint Clair have in October?
What is the UV index intensity in October?
Average temperature in October
Saint Clair, MO
- Average high temperature in October: 66.6°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in October: 48.2°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in October
Saint Clair, MO
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Saint Clair, MO
- Average wind speed in October: 7mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in October
Saint Clair, MO
- Average humidity in October: 72%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
Saint Clair, MO
- Average rainfall in October: 1.65"
The wettest months (with the highest rainfall) are April and May (2.48").
The driest months (with the least rainfall) are January and February (0.98").
Average rainfall days in October
Saint Clair, MO
- Average rainfall days in October: 9.2 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in October
Saint Clair, MO
- Average snowfall in October: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Saint Clair, MO
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Saint Clair, MO
- Average daylight in October: 11h and 1min
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: 5h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in October
Saint Clair, MO
- Average sunshine days in October: 20 days
The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is May (13.7 days).
Average UV index in October
Saint Clair, MO
- 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 Clair, MO
- Average cloud cover in October: 34
The months with the most cloud cover are January and February (Cloud cover 49).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in October
Saint Clair, MO
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, June, July, October, November and December (6mi).
The months with the lowest visibility are May, August and September (5mi).
Saint Clair, Missouri, USA
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