Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
With the arrival of April, the average high-temperature transitions from a fresh 54.1°F (12.3°C) in March to an enjoyable 64.9°F (18.3°C). During April, the average low-temperature in Caseyville, Illinois, is a chilly 47.8°F (8.8°C).Humidity
The average relative humidity in April is 76%.Rainfall
In Caseyville, in April, it is raining for 15.4 days, with typically 3.5" (89mm) of accumulated precipitation. In Caseyville, during the entire year, the rain falls for 149.9 days and collects up to 33.94" (862mm) of precipitation.Snowfall
April through August and October are months without snowfall.Daylight
In Caseyville, the average length of the day in April is 13h and 14min.On the first day of April in Caseyville, Illinois, 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.
Sunshine
In Caseyville, the average sunshine in April is 8.5h.UV index
In April, the average daily maximum UV index in Caseyville is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In April, a daily UV index of 4 turns into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What are the temperatures in Caseyville in April?
What is the average humidity in April in Caseyville?
How much does it rain in Caseyville in April?
When it does not snow in Caseyville?
Does it snow in Caseyville in April?
How many hours of daylight does Caseyville have in April?
When are sunrise and sunset in April in Caseyville?
How many hours of sunshine does Caseyville have in April?
What is the UV index reading in April in Caseyville?
Average temperature in April
Caseyville, IL
- Average high temperature in April: 64.9°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in April: 47.8°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in April
Caseyville, 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).
Average wind speed in April
Caseyville, IL
- Average wind speed in April: 9.1mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in April
Caseyville, IL
- Average humidity in April: 76%
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Caseyville, IL
- Average rainfall in April: 3.5"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in April
Caseyville, IL
- Average rainfall days in April: 15.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in April
Caseyville, IL
- Average snowfall in April: 0"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in April
Caseyville, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Caseyville, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in April
Caseyville, IL
- Average sunshine days in April: 13.1 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in April
Caseyville, 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, November and December (UV index 2).
Average cloud cover in April
Caseyville, IL
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in April
Caseyville, 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).
Caseyville, Illinois, USA
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