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
As April sets, the average high-temperature shows an increase, moving up from an icy 39.2°F (4°C) in March to a cool 52.5°F (11.4°C). Williamsville's nighttime temperature in April falls to an average of 35.1°F (1.7°C).Humidity
April is the least humid month, with an average relative humidity of 74%.Rainfall
In April, the rain falls for 9.4 days. Throughout April, 0.67" (17mm) of precipitation is accumulated. In Williamsville, during the entire year, the rain falls for 91.5 days and collects up to 7.8" (198mm) of precipitation.Snowfall
Months with snowfall in Williamsville are January through April, October through December. April is the last month it regularly snows. During 1.3 snowfall days, in April, Williamsville aggregates 0.55" (14mm) of snow. Throughout the year, there are 28.8 snowfall days, and 7.17" (182mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 26min.On the first day of April, sunrise is at 6:31 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 7:50 pm EDT.
Sunshine
In April, the average sunshine is 8.2h.UV index
The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: An average UV index of 3 in April transforms into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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?
What is the last month it snows?
How many hours of daylight does Williamsville have in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
How high is the UV index in April?
Average temperature in April
Williamsville, VT
- Average high temperature in April: 52.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in April: 35.1°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in April
Williamsville, VT
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Williamsville, VT
- Average wind speed in April: 7.6mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in April
Williamsville, VT
- Average humidity in April: 74%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in April
Williamsville, VT
- Average rainfall in April: 0.67"
The wettest month (with the highest rainfall) is November (0.87").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in April
Williamsville, VT
- Average rainfall days in April: 9.4 days
The month with the highest number of rainy days is May (10 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in April
Williamsville, VT
- Average snowfall in April: 0.55"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Williamsville, VT
- Average snowfall days in April: 1.3 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Williamsville, VT
- 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: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in April
Williamsville, VT
- Average sunshine days in April: 18.2 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in April
Williamsville, VT
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Williamsville, VT
- Average cloud cover in April: 47
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in April
Williamsville, VT
- Average visibility in April: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Williamsville, Vermont, USA
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