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 shift into April is accompanied by a temperature increase, with the average high-temperature rising from a chilly 44.4°F (6.9°C) in March to a refreshing 57°F (13.9°C). In April, Willow Brook's temperature tends to fall to an average low of 39°F (3.9°C) during the night.Humidity
The least humid month is April, with an average relative humidity of 76%.Rainfall
In April, the rain falls for 13.3 days. Throughout April, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 131.1 rainfall days, and 13.31" (338mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Willow Brook, in April, snow falls for 0.8 days, with typically accumulated 0.12" (3mm) of snow. Throughout the year, there are 25.8 snowfall days, and 6.89" (175mm) 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 6:39 am and sunset at 7:23 pm. On the last day of April, sunrise is at 5:55 am and sunset at 7:54 pm EDT.
Sunshine
In April, the average sunshine is 7.9h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in April interprets into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the least humid month?
What is the average humidity in April?
How much does it rain in April?
How many days does it snow in April?
How many hours of daylight does Willow Brook have in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
What is the UV index reading in April?
Average temperature in April
Willow Brook, NJ
- Average high temperature in April: 57°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in April: 39°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in April
Willow Brook, NJ
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Willow Brook, NJ
- Average wind speed in April: 7.1mph
The windiest months (with the highest average wind speed) are January and March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in April
Willow Brook, NJ
- Average humidity in April: 76%
The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in April
Willow Brook, NJ
- Average rainfall in April: 1.06"
The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in April
Willow Brook, NJ
- Average rainfall days in April: 13.3 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in April
Willow Brook, NJ
- Average snowfall in April: 0.12"
The month with the highest snowfall is March (1.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Willow Brook, NJ
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Willow Brook, NJ
- Average daylight in April: 13h and 2min
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 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in April
Willow Brook, NJ
- Average sunshine days in April: 14.3 days
The months with the most sunshine days are January and November (20.4 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in April
Willow Brook, NJ
- Average UV index in April: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Willow Brook, NJ
- Average cloud cover in April: 48
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in April
Willow Brook, NJ
- Average visibility in April: 6mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Willow Brook, New Jersey, USA
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