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
April signals a shift in the average high-temperature, moving from March's fresh 55.2°F (12.9°C) to a refreshing 66.4°F (19.1°C). The mean low-temperature during April nights is a chilly 48.7°F (9.3°C).Humidity
The average relative humidity in April is 77%.Rainfall
April is the month with the most rainfall. Rain falls for 13.8 days and accumulates 3.11" (79mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 0.5 snowfall days, in April, Carterville aggregates 0.08" (2mm) of snow. Throughout the year, there are 14.5 snowfall days, and 4.13" (105mm) of snow is accumulated.Daylight
In Carterville, the average length of the day in April is 13h and 12min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:19 pm. On the last day of April, in Carterville, sunrise is at 6:00 am and sunset at 7:46 pm CDT.
Sunshine
In Carterville, the average sunshine in April is 8.6h.UV index
The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In April, an average UV index of 5 transforms into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
What is the wettest month?
How many days does it rain in April?
What is the last month it snows?
How many hours of daylight does Carterville have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Carterville have in April?
What is the UV index intensity in April?
Average temperature in April
Carterville, IL
- Average high temperature in April: 66.4°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in April: 48.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in April
Carterville, IL
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Carterville, IL
- Average wind speed in April: 9.1mph
The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in April
Carterville, IL
- Average humidity in April: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Carterville, IL
- Average rainfall in April: 3.11"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in April
Carterville, IL
- Average rainfall days in April: 13.8 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in April
Carterville, IL
- Average snowfall in April: 0.08"
The months with the highest snowfall are January and February (0.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Carterville, IL
- Average snowfall days in April: 0.5 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Carterville, IL
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 8h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in April
Carterville, IL
- Average sunshine days in April: 13.7 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in April
Carterville, IL
- Average UV index in April: 5
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 April
Carterville, IL
- Average cloud cover in April: 41
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).
Average visibility in April
Carterville, 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).
Carterville, Illinois, USA
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