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 arrival brings a change in high-temperatures, moving from a cool 51.8°F (11°C) in March to an enjoyable 63.7°F (17.6°C). During the month of April, Keystone's nighttime temperature lowers to an average of 43.9°F (6.6°C).Humidity
The average relative humidity in April in Keystone, West Virginia, is 77%.Rainfall
In Keystone, West Virginia, in April, during 16.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Keystone, during the entire year, the rain falls for 172.5 days and collects up to 29.41" (747mm) of precipitation.Snowfall
Months with snowfall in Keystone are January through May, October through December. In Keystone, in April, during 1.6 snowfall days, 1.06" (27mm) of snow is typically accumulated. Throughout the year, there are 38.6 snowfall days, and 20" (508mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 11min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:48 pm. On the last day of April, in Keystone, sunrise is at 6:30 am and sunset at 8:15 pm EDT.
Sunshine
In April, the average sunshine is 8.4h.UV index
In Keystone, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In April, the maximum UV index of 4 transforms into these recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What is the average April temperature in Keystone?
What is the average humidity in April in Keystone?
How much does it rain in Keystone in April?
How much does it snow in Keystone in April?
What is the average length of the day in April in Keystone?
When is the sunrise / sunset in April in Keystone?
How long on average sun shines in April in Keystone?
How high is the UV index in April in Keystone?
Average temperature in April
Keystone, WV
- Average high temperature in April: 63.7°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in April: 43.9°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in April
Keystone, WV
- Average pressure in April: 30"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in April
Keystone, WV
- Average wind speed in April: 7.1mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in April
Keystone, WV
- Average humidity in April: 77%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August and November (76%).
Average rainfall in April
Keystone, WV
- Average rainfall in April: 2.68"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in April
Keystone, WV
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is May (19.7 days).
The months with the least rainy days are January and November (10.1 days).
Average snowfall in April
Keystone, WV
- Average snowfall in April: 1.06"
The month with the highest snowfall is December (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Keystone, WV
- Average snowfall days in April: 1.6 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Keystone, WV
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in April: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Keystone, WV
- Average sunshine days in April: 12 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in April
Keystone, WV
- Average UV index in April: 4
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in April
Keystone, WV
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June and August (Cloud cover 36).
Average visibility in April
Keystone, WV
- Average visibility in April: 6mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Keystone, West Virginia, USA
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