October weather forecast
Belleville, IL

Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
°Celsius°Fahrenheit
Share

Contents

Weather in October

Autumn solidifies its grip on Belleville during the month of October. The season of 'falling leaves' breathes a wave of cultural and scenic transformation, making October a picturesque time in the city. The dwindling warm days succumb to a crisp, cool climate, making way for mellow, autumnal evenings. Yet, October eases from summer's warmth to autumn's coolness, balancing the temperatures in a spectacular environmental equilibrium. Between the accenting fall colors and crisp air, October signals the full onset of the autumn season in Belleville.

Temperature

In October, the average high-temperature decreases from a warm 79.3°F (26.3°C) in September to a comfortable 66.7°F (19.3°C). Belleville experiences an average low-temperature reading of 48.9°F (9.4°C) throughout October.

Humidity

With an average relative humidity of 71%, October is the least humid month in Belleville, Illinois.

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

April through October are months without snowfall in Belleville.

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, in Belleville, sunrise is at 7:26 am and sunset at 6:00 pm CDT.

Sunshine

In October, the average sunshine in Belleville is 6.1h.

UV index

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 3 during October translates into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
[Resources]

Frequently asked questions

What is the usual temperature for Belleville in October?

In October, the average high-temperature and low-temperature are 66.7°F (19.3°C) and 48.9°F (9.4°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 95°F (35°C).

What is the least humid month in Belleville?

With an average relative humidity of 71%, October is the least humid month in Belleville.

What is the average humidity in October in Belleville?

The average relative humidity in October in Belleville is 71%.

How much does it rain in Belleville in October?

In Belleville, in October, it is raining for 10.6 days, with typically 2.95" (75mm) of accumulated precipitation.

When it does not snow in Belleville?

April through October are months without snowfall in Belleville.

Does it snow in Belleville in October?

In Belleville, Illinois, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Belleville have in October?

In Belleville, Illinois, the average day length in October is 11h and 11min.

When are sunrise and sunset in October in Belleville?

On the first day of October in Belleville, Illinois, sunrise is at 6:56 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 6:00 pm CDT.

How long on average sun shines in October in Belleville?

The average sunshine duration in October is 6.1h.

How high is the UV index in October in Belleville?

In Belleville, Illinois, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
79.3°F 26.3°C
66.7°F 19.3°C
53.4°F 11.9°C
Average low temperature
59.9°F 15.5°C
48.9°F 9.4°C
37.8°F 3.2°C
Average pressure
30.02" 763mmHg
30.03" 763mmHg
30.13" 765mmHg
Average wind speed
6.1mph 9.8km/h
7.9mph 12.7km/h
8.5mph 13.7km/h
Average max. wind speed
6.3mph 10.1km/h
8.5mph 13.7km/h
9.3mph 15km/h
Average wind speed gusts
10.4mph 16.7km/h
13.3mph 21.4km/h
14.4mph 23.2km/h
Average humidity
75%
71%
73%
Average rainfall
2.2" 56mm
2.95" 75mm
2.17" 55mm
Average rainfall days
12.5
10.6
10.5
Average snowfall
0" 0mm
0" 0mm
0.35" 9mm
Average snowfall days
0.1
0.1
1.2
Average daylight
12h 2min
11h 1min
10h 1min
Average sunshine
9h 1min
6h 1min
5h 3min
Average sunshine days
16.1
18.3
17.3
Average UV index
5
3
3
Average cloud cover
31%
34%
38%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in October
Belleville, IL

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).

[Resources]

Average pressure in October
Belleville, IL

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).

[Resources]

Average wind speed in October
Belleville, IL

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).

[Resources]

Average humidity in October
Belleville, IL

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%).

[Resources]

Average rainfall in October
Belleville, IL

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").

[Resources]

Average rainfall days in October
Belleville, IL

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).

[Resources]

Average snowfall in October
Belleville, IL

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").

[Resources]

Average snowfall days in October
Belleville, IL

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).

[Resources]

Average daylight in October /
Average sunshine in October
Belleville, IL

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).

[Resources]

Average sunshine days in October
Belleville, IL

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).

[Resources]

Average UV index in October
Belleville, IL

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).

[Resources]

Average cloud cover in October
Belleville, IL

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).

[Resources]

Average visibility in October
Belleville, IL

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).

[Resources]

Belleville, Illinois, USA

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location