May weather forecastGrantsville, MD
May
Weather in May
The last month of the spring, May, is an agreeable month in Grantsville, Maryland, with an average temperature varying between 69.4°F (20.8°C) and 49.6°F (9.8°C).Temperature
The average high-temperature increases in May, moving from a mild 58.8°F (14.9°C) in April to a pleasant 69.4°F (20.8°C). Grantsville, during the nights of May, experiences an average temperature drop to a frosty 49.6°F (9.8°C).Humidity
The average relative humidity in May is 79%.Rainfall
May is the month with the most rainfall. Rain falls for 21.3 days and accumulates 3.46" (88mm) 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, Grantsville aggregates 0.12" (3mm) of snow. Throughout the year, there are 56.7 snowfall days, and 28.46" (723mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 23min.On the first day of May in Grantsville, sunrise is at 6:16 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:38 pm EDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Grantsville, MD
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (33.3°F).
- Average low temperature in May: 49.6°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 (20.1°F).
Average pressure in May
Grantsville, MD
- Average pressure in May: 30.01"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
Grantsville, MD
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in May
Grantsville, MD
- Average humidity in May: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is July (76%).
Average rainfall in May
Grantsville, MD
- Average rainfall in May: 3.46"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in May
Grantsville, MD
- Average rainfall days in May: 21.3 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is November (11.1 days).
Average snowfall in May
Grantsville, MD
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grantsville, MD
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grantsville, MD
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Grantsville, MD
- Average sunshine days in May: 6.8 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in May
Grantsville, MD
- 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
Grantsville, MD
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Grantsville, MD
- 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).
