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
A subtle rise in the average high-temperature is observed during April, adjusting from a frosty 44.2°F (6.8°C) in March to a fresh 52.9°F (11.6°C). Recording a slight decline in temperature during the nights, West Islip's April temperatures average at a frosty 45.1°F (7.3°C).Humidity
In West Islip, the average relative humidity in April is 74%.Rainfall
In West Islip, during April, the rain falls for 14.5 days and regularly aggregates up to 3.03" (77mm) of precipitation. In West Islip, during the entire year, the rain falls for 157 days and collects up to 35.98" (914mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows in West Islip. During 0.3 snowfall days, in April, West Islip aggregates 0.04" (1mm) of snow. Throughout the year, there are 14.4 snowfall days, and 6.06" (154mm) of snow is accumulated.Daylight
The average length of the day in April in West Islip, New York, is 13h and 19min.On the first day of April, sunrise is at 6:35 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 7:48 pm EDT.
Sunshine
In April, the average sunshine in West Islip is 8.6h.UV index
The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The UV index of 3 during April leads to these advisories:
Be vigilant - Suggestions to stave off sun damage are provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in West Islip?
What is the average humidity in April in West Islip?
How many days does it rain in April in West Islip?
What is the last month it snows in West Islip?
What is the average length of the day in April in West Islip?
What time are sunrise and sunset in April in West Islip?
How long on average sun shines in April in West Islip?
What is the UV index intensity in April in West Islip?
Average temperature in April
West Islip, NY
- Average high temperature in April: 52.9°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in April: 45.1°F
The months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in April
West Islip, NY
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
West Islip, NY
- Average wind speed in April: 11.7mph
The windiest month (with the highest average wind speed) is January (13.6mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in April
West Islip, NY
- Average humidity in April: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in April
West Islip, NY
- Average rainfall in April: 3.03"
The wettest month (with the highest rainfall) is July (3.98").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in April
West Islip, NY
- Average rainfall days in April: 14.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in April
West Islip, NY
- Average snowfall in April: 0.04"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
West Islip, NY
- 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
West Islip, NY
- 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in April
West Islip, NY
- Average sunshine days in April: 14.1 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in April
West Islip, NY
- Average UV index in April: 3
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 and December (UV index 2).
Average cloud cover in April
West Islip, NY
- Average cloud cover in April: 43
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
West Islip, NY
- 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).
West Islip, New York, USA
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