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
Castleton, Vermont, experiences a temperature shift with the start of April, with average high-temperatures moving from a cold 37.4°F (3°C) in March to a fresh 51.4°F (10.8°C). Throughout April, Castleton encounters an average temperature drop to an icy 33.8°F (1°C).Humidity
April and May, with an average relative humidity of 75%, are the least humid months.Rainfall
In April, in Castleton, Vermont, the rain falls for 12.5 days. Throughout April, 0.98" (25mm) of precipitation is accumulated. In Castleton, during the entire year, the rain falls for 112.5 days and collects up to 10.75" (273mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Castleton, in April, during 1.9 snowfall days, 0.35" (9mm) of snow is typically accumulated. Throughout the year, in Castleton, there are 44.2 snowfall days, and 11.42" (290mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 28min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:19 pm. On the last day of April, sunrise is at 5:45 am and sunset at 7:54 pm EDT.
Sunshine
In Castleton, the average sunshine in April is 7.5h.UV index
In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Be vigilant - Preventing sunburn is recommended. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Castleton?
What are the least humid months in Castleton?
What is the average humidity in April in Castleton?
How much does it rain in Castleton in April?
How much does it snow in Castleton in April?
What is the average length of the day in April in Castleton?
What time are sunrise and sunset in April in Castleton?
How long on average sun shines in April in Castleton?
What is the UV index intensity in April in Castleton?
Average temperature in April
Castleton, VT
- Average high temperature in April: 51.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in April: 33.8°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in April
Castleton, VT
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Castleton, VT
- Average wind speed in April: 7.1mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in April
Castleton, VT
- Average humidity in April: 75%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in April
Castleton, VT
- Average rainfall in April: 0.98"
The wettest month (with the highest rainfall) is June (1.22").
The driest months (with the least rainfall) are March and September (0.67").
Average rainfall days in April
Castleton, VT
- Average rainfall days in April: 12.5 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in April
Castleton, VT
- Average snowfall in April: 0.35"
The month with the highest snowfall is February (3.11").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Castleton, VT
- Average snowfall days in April: 1.9 days
The month with the highest number of snowfall days is February (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Castleton, VT
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 7h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in April
Castleton, VT
- Average sunshine days in April: 15.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is February (15.6 days).
Average UV index in April
Castleton, 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
Castleton, VT
- Average cloud cover in April: 52
The month with the most cloud cover is February (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in April
Castleton, VT
- Average visibility in April: 6mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Castleton, Vermont, USA
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