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
Belleville's average high-temperature decreases in October, falling from a moderately hot 79.3°F (26.3°C) in September to a comfortable 66.7°F (19.3°C). The temperature lowers to an average of 48.9°F (9.4°C) during October nights.Humidity
With an average relative humidity of 71%, October is the least humid month.Rainfall
In October, the rain falls for 10.6 days. Throughout October, 2.95" (75mm) of precipitation is accumulated. In Belleville, during the entire year, the rain falls for 147.1 days and collects up to 35.43" (900mm) of precipitation.Snowfall
In Belleville, snow does not fall in April through October.Daylight
In Belleville, the average length of the day in October is 11h and 11min.On the first day of the month, sunrise is at 6:56 am and sunset at 6:42 pm. On the last day of October, sunrise is at 7:26 am and sunset at 6:00 pm CDT.
Sunshine
In Belleville, the average sunshine in October is 6.1h.UV index
In Belleville, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 3 in October transforms into the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by 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 it does not snow?
Does it snow in October?
What is the average length of the day in October?
When are sunrise and sunset in October?
How long on average sun shines in October?
How high is the UV index in October in Belleville?
Average temperature in October
Belleville, IL
- Average high temperature in October: 66.7°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in October: 48.9°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in October
Belleville, IL
- 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
Belleville, IL
- Average wind speed in October: 7.9mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in October
Belleville, IL
- Average humidity in October: 71%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Belleville, IL
- Average rainfall in October: 2.95"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in October
Belleville, IL
- Average rainfall days in October: 10.6 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in October
Belleville, IL
- Average snowfall in October: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Belleville, IL
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Belleville, IL
- 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: 6h and 1min
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 30min).
Average sunshine days in October
Belleville, IL
- Average sunshine days in October: 18.3 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in October
Belleville, IL
- 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 and December (UV index 2).
Average cloud cover in October
Belleville, IL
- Average cloud cover in October: 34
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in October
Belleville, IL
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Belleville, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location