May weather forecastLanham, MD
May
Weather in May
May, the last month of the spring in Lanham, is a moderately hot month, with an average temperature fluctuating between 73.9°F (23.3°C) and 57°F (13.9°C).Temperature
With the onset of May, Lanham's weather sees a temperature rise, transitioning from an enjoyable 64.8°F (18.2°C) in April to a warm 73.9°F (23.3°C). The low-temperature average for Lanham during May stands at a mild 57°F (13.9°C).Humidity
May, October and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In May, the rain falls for 17.9 days. Throughout May, 2.99" (76mm) of precipitation is accumulated. Throughout the year, there are 157.9 rainfall days, and 31.14" (791mm) of precipitation is accumulated.Snowfall
May through November are months without snowfall.Daylight
The average length of the day in May 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, sunrise is at 5:43 am and sunset at 8:26 pm EDT.
Sunshine
The average sunshine in May is 8.9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 6 in May leads to these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lanham, 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
Lanham, 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
Lanham, 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
Lanham, 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
Lanham, 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
Lanham, 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
Lanham, 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
Lanham, 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
Lanham, MD
- Average daylight in May: 14h and 18min
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 54min
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
Lanham, 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
Lanham, 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
Lanham, 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
Lanham, 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).
