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 average high-temperature increases in May, moving from a refreshing 62.8°F (17.1°C) in April to an agreeable 72.1°F (22.3°C). In the month of May, Herndon Heights records a consistent average low-temperature of 51.6°F (10.9°C).Humidity
In Herndon Heights, the average relative humidity in May is 79%.Rainfall
The wettest months are February and May, with an average 3.43" (87mm) of rainfall.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Herndon Heights aggregates 0.43" (11mm) of snow. Throughout the year, in Herndon Heights, there are 50.3 snowfall days, and 27.09" (688mm) of snow is accumulated.Daylight
In Herndon Heights, West Virginia, the average length of the day in May is 14h and 12min.On the first day of May, sunrise is at 6:29 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 8:40 pm EDT.
Sunshine
In Herndon Heights, the average sunshine in May is 9h.UV index
In May, the average daily maximum UV index in Herndon Heights, West Virginia, is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What is the usual temperature for Herndon Heights in May?
What is the average humidity in May in Herndon Heights?
What is the rainiest month in Herndon Heights?
How much does it rain in Herndon Heights in May?
What is the last month it snows in Herndon Heights?
What is the average length of the day in May in Herndon Heights?
When is the sunrise / sunset in May in Herndon Heights?
How long on average sun shines in May in Herndon Heights?
How high is the UV index in May in Herndon Heights?
Average temperature in May
Herndon Heights, WV
- Average high temperature in May: 72.1°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in May: 51.6°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in May
Herndon Heights, WV
- Average pressure in May: 30.03"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 May
Herndon Heights, WV
- Average wind speed in May: 5.9mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in May
Herndon Heights, WV
- Average humidity in May: 79%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are June, July, August and November (77%).
Average rainfall in May
Herndon Heights, WV
- Average rainfall in May: 3.43"
The wettest months (with the highest rainfall) are February and May (3.43").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in May
Herndon Heights, WV
- Average rainfall days in May: 20.1 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is November (11.3 days).
Average snowfall in May
Herndon Heights, WV
- Average snowfall in May: 0.43"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Herndon Heights, WV
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Herndon Heights, 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: 9h and 0min
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 May
Herndon Heights, WV
- Average sunshine days in May: 9.6 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in May
Herndon Heights, WV
- Average UV index in May: 5
The months with the highest UV index are June 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
Herndon Heights, WV
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in May
Herndon Heights, WV
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Herndon Heights, West Virginia, USA
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