April weather forecastCastleton, VA
April
Weather in April
April in Castleton, Virginia, is an enjoyable spring month, with an average temperature varying between 45.1°F (7.3°C) and 65.5°F (18.6°C).Temperature
Castleton in April experiences an increase in the average high-temperature, moving from March's fresh 53.8°F (12.1°C) to an enjoyable 65.5°F (18.6°C). Castleton experiences an average low-temperature of 45.1°F (7.3°C) in the month of April.Humidity
The average relative humidity in April is 73%.Rainfall
In Castleton, during April, the rain falls for 14.3 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 144.4 rainfall days, and 25.08" (637mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Castleton, in April, during 0.3 snowfall days, 0.75" (19mm) of snow is typically accumulated. Throughout the year, there are 15.4 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 14min.On the first day of April, sunrise is at 6:55 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:03 pm EDT.
Sunshine
The average sunshine in April is 8.9h.UV index
In Castleton, Virginia, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 in April translates into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Castleton, VA
- Average high temperature in April: 65.5°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in April: 45.1°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in April
Castleton, VA
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in April
Castleton, VA
- Average wind speed in April: 6.9mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in April
Castleton, VA
- Average humidity in April: 73%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in April
Castleton, VA
- Average rainfall in April: 2.6"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in April
Castleton, VA
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is May (16.1 days).
The months with the least rainy days are January and November (8.3 days).
Average snowfall in April
Castleton, VA
- Average snowfall in April: 0.75"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in April
Castleton, VA
- Average snowfall days in April: 0.3 days
The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Castleton, VA
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in April
Castleton, VA
- Average sunshine days in April: 14.5 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in April
Castleton, VA
- Average UV index in April: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Castleton, VA
- Average cloud cover in April: 40
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in April
Castleton, VA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
