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
In Williston, stepping into April brings a temperature increase, moving up from March's cold 35.8°F (2.1°C) to a chilly 49.6°F (9.8°C). The nighttime temperature dips to a wintry 33.4°F (0.8°C) on average during April.Humidity
April and May, with an average relative humidity of 76%, are the least humid months in Williston.Rainfall
In Williston, in April, during 16.8 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, in Williston, there are 161.7 rainfall days, and 29.33" (745mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Williston, in April, during 6.6 snowfall days, 3.86" (98mm) of snow is typically accumulated. Throughout the year, there are 94.7 snowfall days, and 50.91" (1293mm) of snow is accumulated.Daylight
The average length of the day in April in Williston is 13h and 30min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:20 pm. On the last day of April, sunrise is at 5:43 am and sunset at 7:55 pm EDT.
Sunshine
In April, the average sunshine is 6.8h.UV index
In Williston, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 during April translates into the following directions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Williston in April?
What is the least humid month in Williston?
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 many hours of sunshine does Williston have in April?
How high is the UV index in April in Williston?
Average temperature in April
Williston, VT
- Average high temperature in April: 49.6°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in April: 33.4°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in April
Williston, VT
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Williston, VT
- Average wind speed in April: 7.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in April
Williston, VT
- Average humidity in April: 76%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in April
Williston, VT
- Average rainfall in April: 2.48"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in April
Williston, VT
- Average rainfall days in April: 16.8 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in April
Williston, VT
- Average snowfall in April: 3.86"
The month with the highest snowfall is February (11.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Williston, VT
- Average snowfall days in April: 6.6 days
The month with the highest number of snowfall days is January (20.7 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, VT
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in April: 6h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in April
Williston, VT
- Average sunshine days in April: 9.5 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in April
Williston, VT
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Williston, VT
- Average cloud cover in April: 57
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in April
Williston, VT
- Average visibility in April: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).
Williston, Vermont, USA
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