May weather forecastColumbia, MD
May
Weather in May
Warm and welcoming, May transitions Columbia into the inviting season of Summer. With increased daylight and no signs of snow, the outside invite is hard to resist. A steep climb in both the temperature and humidity levels characterizes the basic nature of the month. Remarkably, highs of 72.7°F (22.6°C) and a significantly high average rainfall of 3.15" (80mm) differentiate May from April. The month culminates, leaving a distinct imprint of summer's inception.Temperature
With the onset of May, Columbia's average high-temperature sees a rise, moving from April's enjoyable 63.1°F (17.3°C) to a pleasant 72.7°F (22.6°C). Columbia records a consistent low-temperature of 55.4°F (13°C) during May nights.Humidity
The months with the highest humidity are May and October, with an average relative humidity of 77%.Rainfall
In Columbia, in May, during 18 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. Throughout the year, there are 159.3 rainfall days, and 30.31" (770mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Columbia, the average length of the day in May is 14h and 20min.On the first day of May, sunrise is at 6:07 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:27 pm EDT.
Sunshine
In Columbia, 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 of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In May, the maximum UV index of 6 translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Columbia, MD
- Average high temperature in May: 72.7°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in May: 55.4°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in May
Columbia, 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
Columbia, MD
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Columbia, MD
- Average humidity in May: 77%
The months with the highest relative humidity are May and October (77%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall in May
Columbia, MD
- Average rainfall in May: 3.15"
The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in May
Columbia, MD
- Average rainfall days in May: 18 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in May
Columbia, MD
- Average snowfall in May: 0"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Columbia, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.6 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
Columbia, 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 48min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in May
Columbia, MD
- Average sunshine days in May: 11 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11 days).
Average UV index in May
Columbia, 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
Columbia, MD
- Average cloud cover in May: 44
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
Columbia, 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).
