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
With the transition into May, Grottoes experiences an increase in average high-temperatures, moving up from a comfortable 63.5°F (17.5°C) in April to a pleasant 72.9°F (22.7°C). Grottoes experiences a steady low-temperature of 51.8°F (11°C) throughout May.Humidity
The months with the highest humidity are May, September and October, with an average relative humidity of 78%.Rainfall
The month with the most rainfall in Grottoes, Virginia, is May, when the rain falls for 18.8 days and typically aggregates up to 3.27" (83mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Grottoes aggregates 0.08" (2mm) of snow. In Grottoes, during the entire year, snow falls for 21.7 days and aggregates up to 16.69" (424mm) of snow.Daylight
In May, the average length of the day is 14h and 16min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:07 pm. On the last day of May, sunrise is at 5:53 am and sunset at 8:32 pm EDT.
Sunshine
The average sunshine in May in Grottoes, Virginia, is 9.2h.UV index
The months with the highest UV index in Grottoes are May through July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 6 during May leads to these instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the average May temperature in Grottoes?
What is the most humid month in Grottoes?
What is the average humidity in May in Grottoes?
What is the wettest month in Grottoes?
How many days does it rain in May in Grottoes?
What is the last month it snows in Grottoes?
What is the average length of the day in May in Grottoes?
When is the sunrise / sunset in May in Grottoes?
How many hours of sunshine does Grottoes have in May?
What is the month with the highest UV index in Grottoes?
How high is the UV index in May in Grottoes?
Average temperature in May
Grottoes, VA
- Average high temperature in May: 72.9°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in May: 51.8°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Grottoes, VA
- 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 (29.96"Hg).
Average wind speed in May
Grottoes, VA
- Average wind speed in May: 5.5mph
The windiest months (with the highest average wind speed) are February and April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in May
Grottoes, VA
- Average humidity in May: 78%
The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January, June and July (74%).
Average rainfall in May
Grottoes, VA
- Average rainfall in May: 3.27"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in May
Grottoes, VA
- Average rainfall days in May: 18.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in May
Grottoes, VA
- Average snowfall in May: 0.08"
The month with the highest snowfall is March (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grottoes, VA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grottoes, VA
- 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 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 18min).
Average sunshine days in May
Grottoes, VA
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in May
Grottoes, VA
- Average UV index in May: 6
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Grottoes, VA
- Average cloud cover in May: 42
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in May
Grottoes, VA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Grottoes, Virginia, USA
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