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 brings a temperature change, with average high-temperatures moving from March's fresh 51.4°F (10.8°C) to a refreshing 63.3°F (17.4°C). In the month of April, South Jacksonville's average low-temperature falls to a frosty 46.2°F (7.9°C).Humidity
In April, the average relative humidity is 75%.Rainfall
In South Jacksonville, in April, during 15.8 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. Throughout the year, there are 148.2 rainfall days, and 29.37" (746mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 0.8 snowfall days, in April, South Jacksonville aggregates 0.16" (4mm) of snow. Throughout the year, in South Jacksonville, there are 28.3 snowfall days, and 9.76" (248mm) of snow is accumulated.Daylight
In South Jacksonville, the average length of the day in April is 13h and 17min.On the first day of April, sunrise is at 6:43 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:54 pm CDT.
Sunshine
In South Jacksonville, the average sunshine in April is 8.4h.UV index
In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In April, the UV index of 4 transforms into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What are April temperatures in South Jacksonville?
What is the average humidity in April in South Jacksonville?
How much does it rain in South Jacksonville in April?
What is the last month it snows in South Jacksonville?
How many hours of daylight does South Jacksonville have in April?
When is the sunrise / sunset in April in South Jacksonville?
How long on average sun shines in April in South Jacksonville?
How high is the UV index in April in South Jacksonville?
Average temperature in April
South Jacksonville, IL
- Average high temperature in April: 63.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in April: 46.2°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in April
South Jacksonville, IL
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
South Jacksonville, IL
- Average wind speed in April: 10mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in April
South Jacksonville, IL
- Average humidity in April: 75%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
South Jacksonville, IL
- Average rainfall in April: 3.39"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in April
South Jacksonville, IL
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and February (7.1 days).
Average snowfall in April
South Jacksonville, IL
- Average snowfall in April: 0.16"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
South Jacksonville, IL
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (9.6 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
South Jacksonville, 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 24min).
- 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 18min).
Average sunshine days in April
South Jacksonville, IL
- Average sunshine days in April: 11.9 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in April
South Jacksonville, 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
South Jacksonville, 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 June, July, August and September (Cloud cover 29).
Average visibility in April
South Jacksonville, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
South Jacksonville, Illinois, USA
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