April weather forecastWilmington, IL
April
Weather in April
April in Wilmington, Illinois, is a mild spring month, with an average temperature fluctuating between 42.4°F (5.8°C) and 58.8°F (14.9°C).Temperature
Wilmington's April weather shows an increase in high-temperatures, moving from March's frosty 47.1°F (8.4°C) to a moderate 58.8°F (14.9°C). April sees the temperature falling to a mean low of 42.4°F (5.8°C).Humidity
In April, the average relative humidity is 74%.Rainfall
In Wilmington, during April, the rain falls for 17.3 days and regularly aggregates up to 3.74" (95mm) of precipitation. In Wilmington, during the entire year, the rain falls for 160.4 days and collects up to 33.5" (851mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 1.8 snowfall days, in April, Wilmington aggregates 1.69" (43mm) of snow. Throughout the year, there are 38.7 snowfall days, and 15.39" (391mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 21min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:18 pm. On the last day of April, sunrise is at 5:50 am and sunset at 7:49 pm CDT.
Sunshine
In Wilmington, the average sunshine in April is 7.8h.UV index
In April, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 4 in April leads to these recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Wilmington, IL
- Average high temperature in April: 58.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in April
Wilmington, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Wilmington, IL
- Average wind speed in April: 9.9mph
The windiest months (with the highest average wind speed) are January and April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in April
Wilmington, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Wilmington, IL
- Average rainfall in April: 3.74"
The wettest month (with the highest rainfall) is May (4.57").
The driest months (with the least rainfall) are February and November (1.69").
Average rainfall days in April
Wilmington, IL
- Average rainfall days in April: 17.3 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in April
Wilmington, IL
- Average snowfall in April: 1.69"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Wilmington, IL
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is January (10.6 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
Wilmington, IL
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 7h and 48min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in April
Wilmington, IL
- Average sunshine days in April: 10.3 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in April
Wilmington, IL
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Wilmington, IL
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in April
Wilmington, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are February, July and August (5mi).
