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 sees a shift in the average high-temperature, moving from a frosty 43.2°F (6.2°C) in March to a cool 54.1°F (12.3°C). An average low-temperature of 39°F (3.9°C) is recorded in the month of April.Humidity
In April, the average relative humidity in Vernon Hills is 75%.Rainfall
In Vernon Hills, Illinois, during April, the rain falls for 16.2 days and regularly aggregates up to 3.19" (81mm) of precipitation. Throughout the year, there are 147.3 rainfall days, and 27.44" (697mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Vernon Hills, Illinois, in April, during 2.5 snowfall days, 2.28" (58mm) of snow is typically accumulated. Throughout the year, in Vernon Hills, there are 48.2 snowfall days, and 18.86" (479mm) of snow is accumulated.Daylight
In April, the average length of the day in Vernon Hills is 13h and 23min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:18 pm. On the last day of April, in Vernon Hills, sunrise is at 5:47 am and sunset at 7:50 pm CDT.
Sunshine
The average sunshine in April is 7.5h.UV index
In Vernon Hills, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 3 during April morphs into the following directions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What is the temperature in April in Vernon Hills?
What is the average humidity in April in Vernon Hills?
How many days does it rain in April in Vernon Hills?
How much does it snow in Vernon Hills in April?
How many hours of daylight does Vernon Hills have in April?
When are sunrise and sunset in April in Vernon Hills?
How many hours of sunshine does Vernon Hills have in April?
How high is the UV index in April in Vernon Hills?
Average temperature in April
Vernon Hills, IL
- Average high temperature in April: 54.1°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in April: 39°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in April
Vernon Hills, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Vernon Hills, IL
- Average wind speed in April: 9.8mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Vernon Hills, IL
- Average humidity in April: 75%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in April
Vernon Hills, IL
- Average rainfall in April: 3.19"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").
Average rainfall days in April
Vernon Hills, IL
- Average rainfall days in April: 16.2 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in April
Vernon Hills, IL
- Average snowfall in April: 2.28"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Vernon Hills, IL
- Average snowfall days in April: 2.5 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Vernon Hills, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Vernon Hills, IL
- Average sunshine days in April: 10.9 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in April
Vernon Hills, IL
- Average UV index in April: 3
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Vernon Hills, IL
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in April
Vernon Hills, IL
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Vernon Hills, Illinois, USA
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