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
Northbrook sees a rise in temperature during April, with average high-temperatures transitioning from a wintry 42.3°F (5.7°C) in March to a cool 52°F (11.1°C). During April, Northbrook observes a consistent average nighttime temperature of 39.7°F (4.3°C).Humidity
In Northbrook, the average relative humidity in April is 76%.Rainfall
In Northbrook, in April, it is raining for 16.5 days, with typically 3.78" (96mm) of accumulated precipitation. Throughout the year, in Northbrook, there are 164.7 rainfall days, and 35.28" (896mm) of precipitation is accumulated.Snowfall
Months with snowfall in Northbrook are January through May, October through December. In Northbrook, during April, snow falls for 2.3 days and regularly aggregates up to 2.44" (62mm) of snow. Throughout the year, there are 47.6 snowfall days, and 17.8" (452mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 23min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:17 pm. On the last day of April, in Northbrook, sunrise is at 5:47 am and sunset at 7:49 pm CDT.
Sunshine
In Northbrook, the average sunshine in April is 7.8h.UV index
The average daily maximum UV index in April in Northbrook is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 in April interprets into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Stay sun-safe with clothing that is both closely woven and worn loosely. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What is the usual temperature for Northbrook in April?
What is the average humidity in April in Northbrook?
How many days does it rain in April in Northbrook?
How much does it snow in Northbrook in April?
How many hours of daylight does Northbrook have in April?
When is the sunrise / sunset in April in Northbrook?
How many hours of sunshine does Northbrook have in April?
What is the UV index reading in April in Northbrook?
Average temperature in April
Northbrook, IL
- Average high temperature in April: 52°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in April: 39.7°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in April
Northbrook, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Northbrook, IL
- Average wind speed in April: 10.6mph
The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in April
Northbrook, IL
- Average humidity in April: 76%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in April
Northbrook, IL
- Average rainfall in April: 3.78"
The wettest months (with the highest rainfall) are May and June (4.57").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in April
Northbrook, IL
- Average rainfall days in April: 16.5 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in April
Northbrook, IL
- Average snowfall in April: 2.44"
The month with the highest snowfall is January (4.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Northbrook, IL
- Average snowfall days in April: 2.3 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Northbrook, 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 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Northbrook, IL
- Average sunshine days in April: 10.2 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in April
Northbrook, IL
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Northbrook, IL
- Average cloud cover in April: 49
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 28).
Average visibility in April
Northbrook, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Northbrook, Illinois, USA
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