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
Riverdale Heights in May experiences an increase in the average high-temperature, moving from April's comfortable 64.8°F (18.2°C) to a warm 73.9°F (23.3°C). May in Riverdale Heights sees the temperature falling to a mean low of 57°F (13.9°C).Humidity
May, October and December, with an average relative humidity of 76%, are the most humid months in Riverdale Heights.Rainfall
In Riverdale Heights, in May, during 17.9 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. In Riverdale Heights, during the entire year, the rain falls for 157.9 days and collects up to 31.14" (791mm) of precipitation.Snowfall
In Riverdale Heights, snow does not fall in May through November.Daylight
In May, the average length of the day in Riverdale Heights is 14h and 19min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:00 pm. On the last day of May, in Riverdale Heights, sunrise is at 5:43 am and sunset at 8:26 pm EDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Riverdale Heights. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 6 transforms into these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What are May temperatures in Riverdale Heights?
What is the most humid month in Riverdale Heights?
What is the average humidity in May in Riverdale Heights?
How much does it rain in Riverdale Heights in May?
When it does not snow in Riverdale Heights?
Does it snow in Riverdale Heights in May?
How many hours of daylight does Riverdale Heights have in May?
When is the sunrise / sunset in May in Riverdale Heights?
How many hours of sunshine does Riverdale Heights have in May?
What are the months with the highest UV index in Riverdale Heights?
What is the UV index reading in May in Riverdale Heights?
Average temperature in May
Riverdale Heights, MD
- Average high temperature in May: 73.9°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in May: 57°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in May
Riverdale 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
Riverdale Heights, MD
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Riverdale Heights, MD
- Average humidity in May: 76%
The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in May
Riverdale Heights, MD
- Average rainfall in May: 2.99"
The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days in May
Riverdale Heights, MD
- Average rainfall days in May: 17.9 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).
Average snowfall in May
Riverdale Heights, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in May
Riverdale Heights, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.1 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
Riverdale Heights, MD
- Average daylight in May: 14h and 2min
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 30min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Riverdale Heights, MD
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in May
Riverdale 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 and December (UV index 2).
Average cloud cover in May
Riverdale Heights, MD
- Average cloud cover in May: 43
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in May
Riverdale Heights, MD
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Riverdale Heights, Maryland, USA
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