April weather forecast
Belleville, IL

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Weather in April

Spring convincingly demonstrates its presence in Belleville during April, emanating an aura of renewal and growth. The charm of the vernal season graces Belleville and its environs with an array of blossoming plant life. The gradual ascension in temperature becomes erratic, contributing to the prevalence of April showers. A shift in wind patterns also becomes noticeable, marking the onset of a transition to a milder season. Together with increased sun exposure from 6.2 to 8.3 hours, Belleville residents experience a surge of vibrant spring energy in April.

Temperature

Belleville experiences a temperature shift with the start of April, with average high-temperatures moving from a fresh 54.5°F (12.5°C) in March to an enjoyable 65.5°F (18.6°C). April witnesses an average nighttime temperature of 47.8°F (8.8°C).

Humidity

In Belleville, the average relative humidity in April is 77%.

Rainfall

In Belleville, in April, during 15.8 rainfall days, 3.78" (96mm) of precipitation is typically 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

The average length of the day in April in Belleville is 13h and 14min.
On the first day of the month, sunrise is at 6:43 am and sunset at 7:23 pm. On the last day of April, sunrise is at 6:02 am and sunset at 7:51 pm CDT.

Sunshine

In Belleville, Illinois, the average sunshine in April is 8.3h.

UV index

In Belleville, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 4 during April, leads to the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

What are April temperatures in Belleville?

In April, the average high-temperature and low-temperature in Belleville, Illinois, are 65.5°F (18.6°C) and 47.8°F (8.8°C) respectively.

What is the average humidity in April in Belleville?

In April, the average relative humidity in Belleville is 77%.

How much does it rain in Belleville in April?

In Belleville, Illinois, in April, during 15.8 rainfall days, 3.78" (96mm) of precipitation is typically accumulated.

When it does not snow in Belleville?

In Belleville, snow does not fall in April through October.

Does it snow in Belleville in April?

In April, in Belleville, it doesn't snow. March is the latest month when it typically snows.

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

The average day length in April in Belleville is 13h and 14min.

When are sunrise and sunset in April in Belleville?

In April, on the first day of the month, sunrise is at 6:43 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:51 pm CDT.

How long on average sun shines in April in Belleville?

The average sunshine duration in April is 8.3h.

How high is the UV index in April in Belleville?

In Belleville, Illinois, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Belleville, IL

Average temperature in April - Belleville, IL
  • Average high temperature in April: 65.5°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 April: 47.8°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).

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Average pressure in April
Belleville, IL

Average pressure in April - Belleville, IL
  • Average pressure in April: 29.94"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).

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Average wind speed in April
Belleville, IL

Average wind speed in April - Belleville, IL
  • Average wind speed in April: 9.1mph

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).

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Average humidity in April
Belleville, IL

Average humidity in April - Belleville, IL
  • Average humidity in April: 77%

The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in April
Belleville, IL

Average rainfall in April - Belleville, IL
  • Average rainfall in April: 3.78"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").

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Average rainfall days in April
Belleville, IL

Average rainfall days in April - Belleville, IL
  • Average rainfall days in April: 15.8 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).

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Average snowfall in April
Belleville, IL

Average snowfall in April - Belleville, IL
  • Average snowfall in April: 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").

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Average snowfall days in April
Belleville, IL

Average snowfall days in April - Belleville, IL
  • Average snowfall days in April: 0.3 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).

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

Average daylight in April / Average sunshine in April - Belleville, IL
  • Average daylight in April: 13h 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 April: 8h and 2min

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).

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Average sunshine days in April
Belleville, IL

Average sunshine days in April - Belleville, IL
  • Average sunshine days in April: 13.1 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).

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Average UV index in April
Belleville, IL

Average UV index in April - Belleville, IL
  • Average UV index in April: 4

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).

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Average cloud cover in April
Belleville, IL

Average cloud cover in April - Belleville, IL
  • Average cloud cover in April: 43

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in April
Belleville, IL

Average visibility in April - Belleville, IL
  • Average visibility in April: 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).

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Belleville, Illinois, USA

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