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's arrival is marked by an increase in the average high-temperature, moving from a pleasant 68°F (20°C) in April to a moderately hot 77°F (25°C). Throughout the month of May, Glen Allen witnesses an average low-temperature of 57.7°F (14.3°C).Humidity
In May, the average relative humidity in Glen Allen is 75%.Rainfall
In Glen Allen, in May, during 17.4 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, in Glen Allen, there are 152.8 rainfall days, and 27.09" (688mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Glen Allen, the average length of the day in May is 14h and 13min.On the first day of May in Glen Allen, Virginia, sunrise is at 6:13 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:25 pm EDT.
Sunshine
In May, the average sunshine is 9.2h.UV index
In May, the average daily maximum UV index in Glen Allen is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Glen Allen in May?
What is the average humidity in May in Glen Allen?
How many days does it rain in May in Glen Allen?
When it does not snow in Glen Allen?
Does it snow in Glen Allen in May?
How many hours of daylight does Glen Allen have in May?
When is the sunrise / sunset in May in Glen Allen?
How long on average sun shines in May in Glen Allen?
What is the UV index intensity in May in Glen Allen?
Average temperature in May
Glen Allen, VA
- Average high temperature in May: 77°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (43.9°F).
- Average low temperature in May: 57.7°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).
Average pressure in May
Glen Allen, VA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Glen Allen, VA
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Glen Allen, VA
- Average humidity in May: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (69%).
Average rainfall in May
Glen Allen, VA
- Average rainfall in May: 2.4"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in May
Glen Allen, VA
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in May
Glen Allen, VA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Glen Allen, VA
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Glen Allen, VA
- 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in May
Glen Allen, VA
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in May
Glen Allen, VA
- Average UV index in May: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Glen Allen, VA
- Average cloud cover in May: 42
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Glen Allen, VA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are May and December (5mi).
Glen Allen, Virginia, USA
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