Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The arrival of May sees a shift in the average high-temperature, moving from a comfortable 64.2°F (17.9°C) in April to a warm 75°F (23.9°C). During the month of May, Mount Alto experiences a steady low-temperature average of 54.3°F (12.4°C).Humidity
The average relative humidity in May in Mount Alto is 78%.Rainfall
May is the month with the most rainfall. Rain falls for 19.4 days and accumulates 4.02" (102mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Mount Alto aggregates 0.2" (5mm) of snow. In Mount Alto, during the entire year, snow falls for 40.4 days and aggregates up to 15.91" (404mm) of snow.Daylight
The average length of the day in May in Mount Alto is 14h and 19min.On the first day of May, sunrise is at 6:28 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:46 pm EDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Deflect overexposure. Sun protection is a necessity. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the wettest month?
How much does it rain in May?
What is the last month it snows in Mount Alto?
What is the average length of the day in May?
When is the sunrise / sunset in May in Mount Alto?
How many hours of sunshine does Mount Alto have in May?
What are the months with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Mount Alto, WV
- Average high temperature in May: 75°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in May: 54.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Mount Alto, WV
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in May
Mount Alto, WV
- Average wind speed in May: 5.7mph
The windiest months (with the highest average wind speed) are January and February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in May
Mount Alto, WV
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (75%).
Average rainfall in May
Mount Alto, WV
- Average rainfall in May: 4.02"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in May
Mount Alto, WV
- Average rainfall days in May: 19.4 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in May
Mount Alto, WV
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Mount Alto, WV
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mount Alto, WV
- Average daylight in May: 14h and 2min
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 May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Mount Alto, WV
- Average sunshine days in May: 9.5 days
The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are February and May (9.5 days).
Average UV index in May
Mount Alto, WV
- Average UV index in May: 6
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 and December (UV index 2).
Average cloud cover in May
Mount Alto, WV
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Mount Alto, WV
- Average visibility in May: 5mi
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).
Mount Alto, West Virginia, USA
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