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 rise in the average high-temperature is observed during April, moving from a wintry 40.6°F (4.8°C) in March to a cool 52.7°F (11.5°C). Williston reports a consistent average low-temperature of 36°F (2.2°C) throughout April nights.Humidity
The average relative humidity in April in Williston is 78%.Rainfall
In Williston, in April, during 15.9 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, in Williston, there are 161.8 rainfall days, and 21.93" (557mm) of precipitation is accumulated.Snowfall
Months with snowfall in Williston, New York, are January through May, October through December. In Williston, during April, snow falls for 4.8 days and regularly aggregates up to 2.09" (53mm) of snow. Throughout the year, there are 78.6 snowfall days, and 25.24" (641mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 25min.On the first day of April, sunrise is at 6:54 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:14 pm EDT.
Sunshine
In Williston, the average sunshine in April is 7.1h.UV index
In Williston, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 during April translates into the following directions:
Exercise prevention - Warding off sunburn is urged. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What are the temperatures in Williston in April?
What is the average humidity in April in Williston?
How much does it rain in Williston in April?
How many days does it snow in April in Williston?
What is the average length of the day in April in Williston?
When is the sunrise / sunset in April in Williston?
How long on average sun shines in April in Williston?
How high is the UV index in April in Williston?
Average temperature in April
Williston, NY
- Average high temperature in April: 52.7°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 (28.9°F).
- Average low temperature in April: 36°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in April
Williston, NY
- Average pressure in April: 29.97"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
Williston, NY
- Average wind speed in April: 8.9mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in April
Williston, NY
- Average humidity in April: 78%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are May, July and August (77%).
Average rainfall in April
Williston, NY
- Average rainfall in April: 2.13"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in April
Williston, NY
- Average rainfall days in April: 15.9 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in April
Williston, NY
- Average snowfall in April: 2.09"
The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Williston, NY
- Average snowfall days in April: 4.8 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Williston, NY
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in April
Williston, NY
- Average sunshine days in April: 9.8 days
The month with the most sunshine days is June (13.4 days).
The month with the least sunshine days is February (6.7 days).
Average UV index in April
Williston, NY
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Williston, NY
- Average cloud cover in April: 53
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Williston, NY
- Average visibility in April: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Williston, New York, USA
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