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
Iselin sees an increase in average high-temperatures during April, moving from a chilly 46.9°F (8.3°C) in March to a mild 58.3°F (14.6°C). Iselin's average low-temperature in April is measured at a chilly 44.1°F (6.7°C).Humidity
The average relative humidity in April in Iselin is 73%.Rainfall
In Iselin, in April, during 10.4 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 110.2 rainfall days, and 8.9" (226mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows in Iselin. During 0.3 snowfall days, in April, Iselin aggregates 0.04" (1mm) of snow. In Iselin, during the entire year, snow falls for 14.5 days and aggregates up to 1.85" (47mm) of snow.Daylight
The average length of the day in April in Iselin, New Jersey, is 13h and 19min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:22 pm. On the last day of April, in Iselin, New Jersey, sunrise is at 5:56 am and sunset at 7:52 pm EDT.
Sunshine
In April, the average sunshine in Iselin is 8.4h.UV index
The average daily maximum UV index in April in Iselin is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in April translates into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Iselin?
What is the average humidity in April in Iselin?
How much does it rain in Iselin in April?
What is the last month it snows in Iselin?
How many hours of daylight does Iselin have in April?
What time are sunrise and sunset in April in Iselin?
How many hours of sunshine does Iselin have in April?
How high is the UV index in April in Iselin?
Average temperature in April
Iselin, NJ
- Average high temperature in April: 58.3°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in April: 44.1°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in April
Iselin, 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
Iselin, NJ
- Average wind speed in April: 9mph
The windiest months (with the highest average wind speed) are January and March (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in April
Iselin, NJ
- Average humidity in April: 73%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (72%).
Average rainfall in April
Iselin, NJ
- Average rainfall in April: 0.63"
The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in April
Iselin, NJ
- Average rainfall days in April: 10.4 days
The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in April
Iselin, NJ
- Average snowfall in April: 0.04"
The month with the highest snowfall is March (0.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Iselin, NJ
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (4.2 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
Iselin, NJ
- Average daylight in April: 13h and 2min
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: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in April
Iselin, NJ
- Average sunshine days in April: 17.3 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in April
Iselin, NJ
- 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, March, November and December (UV index 2).
Average cloud cover in April
Iselin, NJ
- Average cloud cover in April: 44
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in April
Iselin, NJ
- 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).
Iselin, New Jersey, USA
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