April weather forecastNormal, IL
April
Weather in April
By April, Normal has largely shrugged off the vestiges of winter. Weather patterns shift towards increased rainfall, reaching 2.4" (61mm), signaling spring's arrival. The city basks in the glory of noticeably longer daylight hours, typically up to roughly 13.3 hours. Additionally, April is characterised by moderate temperatures, setting the scene for a pleasurable spring in Normal. While weather changes are embraced, an increased cloud percentage highlights April's unreliable and changeable nature.Temperature
With the onset of April, the average high-temperature slightly shifts from March's chilly 48.7°F (9.3°C) to a refreshing 60.4°F (15.8°C). Normal's temperature lowers to a mean of 44.2°F (6.8°C) during the nights in April.Humidity
The average relative humidity in April is 74%.Rainfall
In Normal, during April, the rain falls for 14.6 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 140.6 rainfall days, and 22.44" (570mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows in Normal, Illinois. During 1 snowfall days, in April, Normal aggregates 0.75" (19mm) of snow. Throughout the year, there are 35.4 snowfall days, and 9.45" (240mm) of snow is accumulated.Daylight
In April, the average length of the day in Normal is 13h and 19min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:21 pm. On the last day of April, in Normal, sunrise is at 5:55 am and sunset at 7:51 pm CDT.
Sunshine
In Normal, the average sunshine in April is 7.6h.UV index
In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In April, the maximum UV index of 4 transforms into these recommendations:
Make use of precautions - It is urged to ward off sun damage. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Normal, IL
- Average high temperature in April: 60.4°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in April: 44.2°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 (18.9°F).
Average pressure in April
Normal, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Normal, IL
- Average wind speed in April: 11mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in April
Normal, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Normal, IL
- Average rainfall in April: 2.4"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in April
Normal, IL
- Average rainfall days in April: 14.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in April
Normal, IL
- Average snowfall in April: 0.75"
The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Normal, IL
- Average snowfall days in April: 1 days
The month with the highest number of snowfall days is January (11.5 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
Normal, IL
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 7h and 36min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in April
Normal, IL
- Average sunshine days in April: 12.8 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in April
Normal, 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
Normal, IL
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in April
Normal, 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).
