May weather forecastMerryman Heights, MD
May
Weather in May
May, the last month of the spring in Merryman Heights, is an agreeable month, with temperature in the range of an average low of 54.1°F (12.3°C) and an average high of 71.8°F (22.1°C).Temperature
With the beginning of May, Merryman Heights's average high-temperature sees an increase, transitioning from a refreshing 62.2°F (16.8°C) in April to a pleasant 71.8°F (22.1°C). Merryman Heights records a mean low-temperature of 54.1°F (12.3°C) in May.Humidity
The most humid month is May, with an average relative humidity of 79%.Rainfall
In Merryman Heights, in May, during 17.7 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. Throughout the year, in Merryman Heights, there are 159 rainfall days, and 31.61" (803mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Merryman Heights aggregates 0.16" (4mm) of snow. In Merryman Heights, during the entire year, snow falls for 18.7 days and aggregates up to 9.96" (253mm) of snow.Daylight
In May, the average length of the day is 14h and 22min.On the first day of May, sunrise is at 6:07 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:28 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: During May, 6 as the daily maximum UV index converts into the following advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Merryman Heights, MD
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in May
Merryman Heights, 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 (29.94"Hg).
Average wind speed in May
Merryman Heights, MD
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in May
Merryman Heights, MD
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in May
Merryman Heights, MD
- Average rainfall in May: 3.23"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in May
Merryman Heights, MD
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in May
Merryman Heights, MD
- Average snowfall in May: 0.16"
The month with the highest snowfall is March (2.8").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Merryman Heights, MD
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Merryman Heights, 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).
Average sunshine days in May
Merryman Heights, MD
- Average sunshine days in May: 11.2 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in May
Merryman Heights, MD
- Average UV index in May: 6
The months with the highest UV index are May, June, July 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
Merryman Heights, MD
- Average cloud cover in May: 46
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Merryman Heights, MD
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
