May weather forecastPotomac Heights, MD
May
Weather in May
The last month of the spring, May, is a warm month in Potomac Heights, Maryland, with an average temperature varying between 75.2°F (24°C) and 56.3°F (13.5°C).Temperature
Potomac Heights experiences a temperature shift with the start of May, with average high-temperatures moving from an enjoyable 65.5°F (18.6°C) in April to a warm 75.2°F (24°C). During the month of May, Potomac Heights anticipates a mean low-temperature of 56.3°F (13.5°C).Humidity
The months with the highest humidity are May, October and December, with an average relative humidity of 77%.Rainfall
In Potomac Heights, during May, the rain falls for 18.1 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Potomac Heights, Maryland, during the entire year, the rain falls for 164.3 days and collects up to 32.32" (821mm) of precipitation.Snowfall
May through November are months without snowfall in Potomac Heights.Daylight
In Potomac Heights, the average length of the day in May is 14h and 17min.On the first day of May in Potomac Heights, sunrise is at 6:10 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:26 pm EDT.
Sunshine
The average sunshine in May is 9h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In May, a daily UV index of 6 turns into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Potomac Heights, MD
- Average high temperature in May: 75.2°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in May
Potomac 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 (29.95"Hg).
Average wind speed in May
Potomac Heights, MD
- Average wind speed in May: 6.1mph
The windiest months (with the highest average wind speed) are March and April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in May
Potomac Heights, MD
- Average humidity in May: 77%
The months with the highest relative humidity are May, October and December (77%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall in May
Potomac Heights, MD
- Average rainfall in May: 3.23"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days in May
Potomac Heights, MD
- Average rainfall days in May: 18.1 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in May
Potomac Heights, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in May
Potomac Heights, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.8 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
Potomac Heights, MD
- Average daylight in May: 14h and 18min
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 30min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in May
Potomac Heights, MD
- Average sunshine days in May: 10.6 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in May
Potomac 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, November and December (UV index 2).
Average cloud cover in May
Potomac 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 30).
Average visibility in May
Potomac 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).
