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
May sees a temperature increase, moving from a mild 60.6°F (15.9°C) in April to a pleasant 70°F (21.1°C). In the month of May, Union experiences an average low-temperature of 49.1°F (9.5°C).Humidity
In May, the average relative humidity is 81%.Rainfall
May is the month with the most rainfall in Union. Rain falls for 22.2 days and accumulates 3.39" (86mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Union. During 0.3 snowfall days, in May, Union aggregates 0.24" (6mm) of snow. Throughout the year, in Union, there are 44.3 snowfall days, and 20.67" (525mm) of snow is accumulated.Daylight
In May, the average length of the day in Union is 14h and 13min.On the first day of May, sunrise is at 6:25 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:37 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
The months with the highest UV index in Union are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 during May translates into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Boost your sun resistance with garments that are densely woven yet spacious. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Union?
What is the average humidity in May in Union?
What is the wettest month in Union?
How much does it rain in Union in May?
What is the last month it snows in Union?
How many hours of daylight does Union have in May?
When is the sunrise / sunset in May in Union?
How many hours of sunshine does Union have in May?
When is the highest UV index in Union?
What is the UV index intensity in May in Union?
Average temperature in May
Union, WV
- Average high temperature in May: 70°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in May
Union, WV
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
Union, WV
- Average wind speed in May: 5.7mph
The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in May
Union, WV
- Average humidity in May: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is June (78%).
Average rainfall in May
Union, WV
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in May
Union, WV
- Average rainfall days in May: 22.2 days
The month with the highest number of rainy days is May (22.2 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in May
Union, WV
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Union, WV
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Union, WV
- Average daylight in May: 14h 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 May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Union, WV
- Average sunshine days in May: 7.7 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (7.7 days).
Average UV index in May
Union, WV
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Union, WV
- Average cloud cover in May: 49
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in May
Union, WV
- Average visibility in May: 4mi
The months with the highest visibility are March, April, June, July, November and December (5mi).
The months with the lowest visibility are January, February, May, August, September and October (4mi).
Union, West Virginia, USA
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