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
April's onset witnesses a shift in the average high-temperature, moving from a moderate 57.7°F (14.3°C) in March to a pleasant 69.6°F (20.9°C). Throughout April, Alton's nights cool down to an average of 49.3°F (9.6°C).Humidity
In Alton, Virginia, the average relative humidity in April is 73%.Rainfall
In Alton, during April, the rain falls for 14.6 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Alton, during the entire year, the rain falls for 157.9 days and collects up to 29.57" (751mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Alton. April is the last month it regularly snows in Alton. During 0.2 snowfall days, in April, Alton aggregates 0.04" (1mm) of snow. In Alton, during the entire year, snow falls for 9.2 days and aggregates up to 7.64" (194mm) of snow.Daylight
The average length of the day in April in Alton is 13h and 9min.On the first day of April, sunrise is at 7:00 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 8:03 pm EDT.
Sunshine
In April, the average sunshine in Alton is 9.4h.UV index
In April, the average daily maximum UV index in Alton is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during April leads to these instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Alton?
What is the average humidity in April in Alton?
How much does it rain in Alton in April?
What is the last month it snows in Alton?
What is the average length of the day in April in Alton?
When is the sunrise / sunset in April in Alton?
How many hours of sunshine does Alton have in April?
What is the UV index reading in April in Alton?
Average temperature in April
Alton, VA
- Average high temperature in April: 69.6°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in April: 49.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in April
Alton, VA
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in April
Alton, VA
- 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 (4.7mph).
Average humidity in April
Alton, VA
- Average humidity in April: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).
Average rainfall in April
Alton, VA
- Average rainfall in April: 2.56"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in April
Alton, VA
- Average rainfall days in April: 14.6 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in April
Alton, VA
- Average snowfall in April: 0.04"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Alton, VA
- Average snowfall days in April: 0.2 days
The months with the highest number of snowfall days are January and February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Alton, VA
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in April: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in April
Alton, VA
- Average sunshine days in April: 13.8 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in April
Alton, VA
- Average UV index in April: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in April
Alton, VA
- Average cloud cover in April: 37
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in April
Alton, 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).
Alton, Virginia, USA
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