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
Clarendon Hills's transition into April is marked by a rise in the average high-temperature, advancing from a chilly 45.1°F (7.3°C) in March to a mild 56.5°F (13.6°C). Throughout April, the average low-temperature records at a wintry 40.6°F (4.8°C).Humidity
In April, the average relative humidity in Clarendon Hills, Illinois, is 74%.Rainfall
In April, the rain falls for 12.8 days. Throughout April, 1.38" (35mm) of precipitation is accumulated. In Clarendon Hills, Illinois, during the entire year, the rain falls for 118.5 days and collects up to 13.74" (349mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.4 snowfall days, in April, Clarendon Hills aggregates 1.1" (28mm) of snow. Throughout the year, there are 34.9 snowfall days, and 7.2" (183mm) of snow is accumulated.Daylight
In April, the average length of the day in Clarendon Hills, Illinois, is 13h and 22min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:17 pm. On the last day of April, in Clarendon Hills, sunrise is at 5:48 am and sunset at 7:49 pm CDT.
Sunshine
The average sunshine in April in Clarendon Hills is 7.6h.UV index
The average daily maximum UV index in April in Clarendon Hills, Illinois, is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 3 in April leads to these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. To protect against the Sun's most potent rays, avoid direct exposure around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Stay alert! Snow's reflective properties 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 in Clarendon Hills?
What is the average humidity in April in Clarendon Hills?
How many days does it rain in April in Clarendon Hills?
What is the last month it snows in Clarendon Hills?
What is the average length of the day in April in Clarendon Hills?
What time are sunrise and sunset in April in Clarendon Hills?
How many hours of sunshine does Clarendon Hills have in April?
What is the UV index reading in April in Clarendon Hills?
Average temperature in April
Clarendon Hills, IL
- Average high temperature in April: 56.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in April: 40.6°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in April
Clarendon Hills, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Clarendon Hills, IL
- Average wind speed in April: 9.4mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in April
Clarendon Hills, IL
- Average humidity in April: 74%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Clarendon Hills, IL
- Average rainfall in April: 1.38"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days in April
Clarendon Hills, IL
- Average rainfall days in April: 12.8 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in April
Clarendon Hills, IL
- Average snowfall in April: 1.1"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Clarendon Hills, IL
- Average snowfall days in April: 1.4 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Clarendon Hills, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Clarendon Hills, IL
- Average sunshine days in April: 13.8 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in April
Clarendon Hills, IL
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Clarendon Hills, IL
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in April
Clarendon Hills, 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).
Clarendon Hills, Illinois, USA
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