January weather forecast
Belleville, IL

Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
°Celsius°Fahrenheit
Share

Contents

Weather in January

An influx of chill awakens the year in Belleville, Illinois. January relinquishes sunlight sparingly, with relatively fewer daylight hours. The city experiences a noticeable drop in temperature post the festive season, with the average high and low temperatures ranging from 37.8°F (3.2°C) to 24.8°F (-4°C). Ample cloud coverage garners a frosty demeanor, with snowfall gracing the onset of the year. This marks the commencement of a dance between snow, rain, and sun, promising an animated weather narrative for the year ahead.

Temperature

January proves to be the coldest month, recording an average maximum temperature of 37.8°F (3.2°C) and a minimum temperature of 24.8°F (-4°C).

Humidity

In January, the average relative humidity in Belleville is 75%.

Rainfall

In Belleville, Illinois, in January, during 6.8 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, in Belleville, there are 147.1 rainfall days, and 35.43" (900mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Belleville are January through March, November and December. The month with the most snowfall is January, when snow falls for 7.3 days and typically aggregates up to 2.4" (61mm) of snow.

Daylight

The average length of the day in January is 9h and 50min.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:49 pm. On the last day of January, in Belleville, sunrise is at 7:06 am and sunset at 5:20 pm CST.

Sunshine

The month with the least sunshine in Belleville is January, with an average of 4.5h of sunshine.

UV index

The months with the lowest UV index in Belleville are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 in January translates into these instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
[Resources]

Frequently asked questions

What are the coldest months in Belleville?

Belleville witnesses the coldest weather in January, with temperatures averaging a high of 37.8°F (3.2°C) and a low of 24.8°F (-4°C).

How cold is January in Belleville?

The high-temperature, in January, in Belleville, is 37.8°F (3.2°C), while the low-temperature averages to 24.8°F (-4°C).

What is the average humidity in January in Belleville?

In Belleville, the average relative humidity in January is 75%.

How much does it rain in Belleville in January?

In Belleville, in January, it is raining for 6.8 days, with typically 2.32" (59mm) of accumulated precipitation.

When does it snow the most in Belleville?

January is the month with the most snowfall in Belleville, Illinois. Snow falls for 7.3 days and accumulates 2.4" (61mm) of snow.

How many days does it snow in January in Belleville?

In Belleville, Illinois, during January, snow falls for 7.3 days and regularly aggregates up to 2.4" (61mm) of snow.

What is the average length of the day in January in Belleville?

In Belleville, Illinois, the average day length in January is 9h and 50min.

What time are sunrise and sunset in January in Belleville?

On the first day of January, sunrise is at 7:17 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:20 pm CST.

What is the month with the least sunshine in Belleville?

With an average of 4.5h of sunshine, January has the least sunshine of the year in Belleville.

How long on average sun shines in January in Belleville?

In January, the average sunshine duration is 4.5h.

When is the lowest UV index in Belleville?

The months with the lowest UV index in Belleville, Illinois, are January, February and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Belleville?

In January, the average daily maximum UV index in Belleville, Illinois, is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
42.6°F 5.9°C
37.8°F 3.2°C
42.4°F 5.8°C
Average low temperature
30.6°F -0.8°C
24.8°F -4°C
27.9°F -2.3°C
Average pressure
30.13" 765mmHg
30.16" 766mmHg
30.12" 765mmHg
Average wind speed
8.7mph 14km/h
9.4mph 15.1km/h
9.3mph 15km/h
Average max. wind speed
9.4mph 15.1km/h
10.1mph 16.3km/h
9.9mph 15.9km/h
Average wind speed gusts
14.2mph 22.9km/h
15.2mph 24.5km/h
15mph 24.1km/h
Average humidity
76%
75%
77%
Average rainfall
2.28" 58mm
2.32" 59mm
1.93" 49mm
Average rainfall days
8.4
6.8
7.8
Average snowfall
2.01" 51mm
2.4" 61mm
2.36" 60mm
Average snowfall days
4
7.3
6
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
4h 4min
4h 3min
4h 4min
Average sunshine days
18.2
17.5
14.8
Average UV index
2
2
2
Average cloud cover
50%
52%
51%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Belleville, IL

Average temperature in January - Belleville, IL
  • Average high temperature in January: 37.8°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 January: 24.8°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 January
Belleville, IL

Average pressure in January - Belleville, IL
  • Average pressure in January: 30.16"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 January
Belleville, IL

Average wind speed in January - Belleville, IL
  • Average wind speed in January: 9.4mph

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 January
Belleville, IL

Average humidity in January - Belleville, IL
  • Average humidity in January: 75%

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 January
Belleville, IL

Average rainfall in January - Belleville, IL
  • Average rainfall in January: 2.32"

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 January
Belleville, IL

Average rainfall days in January - Belleville, IL
  • Average rainfall days in January: 6.8 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 January
Belleville, IL

Average snowfall in January - Belleville, IL
  • Average snowfall in January: 2.4"

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 January
Belleville, IL

Average snowfall days in January - Belleville, IL
  • Average snowfall days in January: 7.3 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 January /
Average sunshine in January
Belleville, IL

Average daylight in January / Average sunshine in January - Belleville, IL
  • Average daylight in January: 9h and 5min

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 January: 4h and 3min

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 January
Belleville, IL

Average sunshine days in January - Belleville, IL
  • Average sunshine days in January: 17.5 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 January
Belleville, IL

Average UV index in January - Belleville, IL
  • Average UV index in January: 2

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 January
Belleville, IL

Average cloud cover in January - Belleville, IL
  • Average cloud cover in January: 52

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 January
Belleville, IL

Average visibility in January - Belleville, IL
  • Average visibility in January: 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