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
The beginning of April marks a shift in the average high-temperature, moving from March's fresh 52.2°F (11.2°C) to a comfortable 63.9°F (17.7°C). An average nighttime temperature of 46.4°F (8°C) is recorded during April.Humidity
In April, the average relative humidity is 76%.Rainfall
In Chesterfield, during April, the rain falls for 14.6 days and regularly aggregates up to 2.64" (67mm) of precipitation. In Chesterfield, during the entire year, the rain falls for 138.2 days and collects up to 23.31" (592mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Chesterfield, the average length of the day in April is 13h and 16min.On the first day of April, sunrise is at 6:43 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:52 pm CDT.
Sunshine
In Chesterfield, the average sunshine in April is 8.4h.UV index
In Chesterfield, Illinois, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 4 in April interprets into the following advice:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Chesterfield?
What is the average humidity in April?
How much does it rain in April?
When it does not snow?
Does it snow in April?
What is the average length of the day in April?
When are sunrise and sunset in April?
How many hours of sunshine does Chesterfield have in April?
How high is the UV index in April?
Average temperature in April
Chesterfield, IL
- Average high temperature in April: 63.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in April: 46.4°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in April
Chesterfield, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Chesterfield, IL
- Average wind speed in April: 9.8mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in April
Chesterfield, IL
- Average humidity in April: 76%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Chesterfield, IL
- Average rainfall in April: 2.64"
The wettest month (with the highest rainfall) is June (3.07").
The driest months (with the least rainfall) are January and February (1.22").
Average rainfall days in April
Chesterfield, IL
- Average rainfall days in April: 14.6 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in April
Chesterfield, IL
- Average snowfall in April: 0"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Chesterfield, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (6.3 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
Chesterfield, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
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 24min).
Average sunshine days in April
Chesterfield, IL
- Average sunshine days in April: 14 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in April
Chesterfield, IL
- Average UV index in April: 4
The months with the highest UV index are 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
Chesterfield, IL
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in April
Chesterfield, 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).
Chesterfield, Illinois, USA
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