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
In Grayslake, stepping into April brings a temperature increase, moving up from March's chilly 42.8°F (6°C) to a fresh 53.6°F (12°C). In Grayslake, April nights cool down to an average of 38.8°F (3.8°C).Humidity
In Grayslake, the average relative humidity in April is 76%.Rainfall
The month with the most rainfall in Grayslake is April, when the rain falls for 14.8 days and typically aggregates up to 2.72" (69mm) of precipitation.Snowfall
Months with snowfall in Grayslake are January through May, October through December. In Grayslake, in April, during 2.5 snowfall days, 1.61" (41mm) of snow is typically accumulated. Throughout the year, in Grayslake, Illinois, there are 49.5 snowfall days, and 13.54" (344mm) of snow is accumulated.Daylight
In April, the average length of the day in Grayslake is 13h and 24min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:18 pm. On the last day of April, sunrise is at 5:47 am and sunset at 7:51 pm CDT.
Sunshine
In April, the average sunshine in Grayslake is 7.6h.UV index
The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What is the average April temperature in Grayslake?
What is the average humidity in April in Grayslake?
What is the rainiest month in Grayslake?
How much does it rain in Grayslake in April?
How many days does it snow in April in Grayslake?
How many hours of daylight does Grayslake have in April?
When are sunrise and sunset in April in Grayslake?
How long on average sun shines in April in Grayslake?
What is the UV index reading in April in Grayslake?
Average temperature in April
Grayslake, IL
- Average high temperature in April: 53.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in April: 38.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in April
Grayslake, IL
- Average pressure in April: 29.96"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Grayslake, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Grayslake, IL
- Average humidity in April: 76%
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
Grayslake, IL
- Average rainfall in April: 2.72"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days in April
Grayslake, IL
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).
Average snowfall in April
Grayslake, IL
- Average snowfall in April: 1.61"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Grayslake, IL
- Average snowfall days in April: 2.5 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Grayslake, 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 6min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Grayslake, IL
- Average sunshine days in April: 11.6 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in April
Grayslake, IL
- Average UV index in April: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Grayslake, 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, August and September (Cloud cover 30).
Average visibility in April
Grayslake, IL
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Grayslake, Illinois, USA
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