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 arrival of April brings an increase in high-temperatures, moving from a moderate 55.4°F (13°C) in March to a still refreshing 66.4°F (19.1°C). Chester cools down to an average low-temperature of 48°F (8.9°C) throughout the month of April.Humidity
In April, the average relative humidity is 77%.Rainfall
April is the month with the most rainfall in Chester. Rain falls for 15.6 days and accumulates 4.13" (105mm) of precipitation.Snowfall
Months with snowfall in Chester, Illinois, are January through April, October through December. April is the last month it regularly snows in Chester. During 0.3 snowfall days, in April, Chester aggregates 0.04" (1mm) of snow. Throughout the year, in Chester, there are 16 snowfall days, and 6.89" (175mm) of snow is accumulated.Daylight
In Chester, the average length of the day in April is 13h and 13min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:22 pm. On the last day of April, sunrise is at 6:03 am and sunset at 7:49 pm CDT.
Sunshine
The average sunshine in April in Chester is 8.6h.UV index
In April, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 5 during April leads to these instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the average April temperature in Chester?
What is the average humidity in April in Chester?
What is the wettest month in Chester?
How much does it rain in Chester in April?
What is the last month it snows in Chester?
What is the average length of the day in April in Chester?
What time are sunrise and sunset in April in Chester?
How many hours of sunshine does Chester have in April?
How high is the UV index in April in Chester?
Average temperature in April
Chester, 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°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 (25.7°F).
Average pressure in April
Chester, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Chester, IL
- Average wind speed in April: 8.9mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in April
Chester, 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
Chester, IL
- Average rainfall in April: 4.13"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in April
Chester, IL
- Average rainfall days in April: 15.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in April
Chester, IL
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Chester, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (5.2 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
Chester, 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 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 42min).
Average sunshine days in April
Chester, IL
- Average sunshine days in April: 12.6 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in April
Chester, 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
Chester, IL
- Average cloud cover in April: 41
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in April
Chester, 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).
Chester, Illinois, USA
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