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
As September transitions to October, the average high-temperature falls from a moderately hot 77.7°F (25.4°C) to an enjoyable 64°F (17.8°C). In October, South Jacksonville encounters an average low-temperature of 47.5°F (8.6°C) during the night.Humidity
With an average relative humidity of 71%, October is the least humid month.Rainfall
In October, the rain falls for 11.8 days. Throughout October, 2.72" (69mm) of precipitation is accumulated. In South Jacksonville, during the entire year, the rain falls for 148.2 days and collects up to 29.37" (746mm) 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 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 28.3 snowfall days, and 9.76" (248mm) of snow is accumulated.Daylight
In South Jacksonville, the average length of the day in October is 11h and 8min.On the first day of October, sunrise is at 6:57 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:59 pm CDT.
Sunshine
In South Jacksonville, the average sunshine in October is 5.9h.UV index
In South Jacksonville, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 during October translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the least humid month?
What is the average humidity in October?
How much does it rain in October?
When does it start snowing?
How many hours of daylight does South Jacksonville have in October?
When are sunrise and sunset in October?
How many hours of sunshine does South Jacksonville have in October?
What is the UV index intensity in October?
Average temperature in October
South Jacksonville, IL
- Average high temperature in October: 64°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in October: 47.5°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in October
South Jacksonville, IL
- Average pressure in October: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
South Jacksonville, IL
- Average wind speed in October: 8.8mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in October
South Jacksonville, IL
- Average humidity in October: 71%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
South Jacksonville, IL
- Average rainfall in October: 2.72"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in October
South Jacksonville, IL
- Average rainfall days in October: 11.8 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and February (7.1 days).
Average snowfall in October
South Jacksonville, IL
- Average snowfall in October: 0.08"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
South Jacksonville, IL
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is January (9.6 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
South Jacksonville, IL
- 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 24min).
- Average sunshine in October: 5h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in October
South Jacksonville, IL
- Average sunshine days in October: 17.3 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in October
South Jacksonville, IL
- Average UV index in October: 3
The months with the highest UV index are 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
South Jacksonville, IL
- Average cloud cover in October: 34
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in October
South Jacksonville, IL
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
South Jacksonville, Illinois, USA
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