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 onset of May marks an increase in the average high-temperature, moving from a refreshing 61.9°F (16.6°C) in April to an agreeable 72.1°F (22.3°C). Rollyson experiences a mean temperature of 52.3°F (11.3°C) during May nights.Humidity
In Rollyson, the average relative humidity in May is 79%.Rainfall
The month with the most rainfall in Rollyson is May, when the rain falls for 21.5 days and typically aggregates up to 4.37" (111mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Rollyson aggregates 0.47" (12mm) of snow. Throughout the year, there are 58.6 snowfall days, and 34.25" (870mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 19min.On the first day of May, sunrise is at 6:23 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:41 pm EDT.
Sunshine
In Rollyson, West Virginia, the average sunshine in May is 9h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Rollyson?
What is the average humidity in May in Rollyson?
What is the wettest month in Rollyson?
How much does it rain in Rollyson in May?
What is the last month it snows in Rollyson?
How many hours of daylight does Rollyson have in May?
When is the sunrise / sunset in May in Rollyson?
How long on average sun shines in May in Rollyson?
What is the UV index reading in May in Rollyson?
Average temperature in May
Rollyson, WV
- Average high temperature in May: 72.1°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in May
Rollyson, WV
- Average pressure in May: 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 May
Rollyson, WV
- Average wind speed in May: 5.7mph
The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in May
Rollyson, WV
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, August and November (77%).
Average rainfall in May
Rollyson, WV
- Average rainfall in May: 4.37"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Rollyson, WV
- Average rainfall days in May: 21.5 days
The month with the highest number of rainy days is May (21.5 days).
The month with the least rainy days is February (12.9 days).
Average snowfall in May
Rollyson, WV
- Average snowfall in May: 0.47"
The month with the highest snowfall is January (8.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Rollyson, WV
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rollyson, 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: 9h and 0min
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 42min).
Average sunshine days in May
Rollyson, WV
- Average sunshine days in May: 7.8 days
The month with the most sunshine days is October (14.3 days).
The months with the least sunshine days are January and February (7.3 days).
Average UV index in May
Rollyson, WV
- Average UV index in May: 5
The months with the highest UV index are 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 May
Rollyson, WV
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Rollyson, WV
- Average visibility in May: 5mi
The months with the highest visibility are April and November (6mi).
The month with the lowest visibility is January (4mi).
Rollyson, West Virginia, USA
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