May weather forecastHillsboro, MD
May
Weather in May
The last month of the spring, May, is an agreeable month in Hillsboro, Maryland, with an average temperature fluctuating between 56.8°F (13.8°C) and 71.8°F (22.1°C).Temperature
May indicates a change in the average high-temperature, moving up from a comfortable 62.2°F (16.8°C) in April to a pleasant 71.8°F (22.1°C). May brings with it a nighttime average temperature of 56.8°F (13.8°C).Humidity
May and August, with an average relative humidity of 79%, are the most humid months.Rainfall
In Hillsboro, in May, during 16.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 154.5 rainfall days, and 28.66" (728mm) of precipitation is accumulated.Snowfall
In Hillsboro, snow does not fall in April through October.Daylight
In Hillsboro, the average length of the day in May is 14h and 19min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:56 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:22 pm EDT.
Sunshine
In May, the average sunshine is 9.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 6 during May translates into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hillsboro, MD
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in May: 56.8°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in May
Hillsboro, MD
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Hillsboro, MD
- Average wind speed in May: 7.8mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Hillsboro, MD
- Average humidity in May: 79%
The months with the highest relative humidity are May and August (79%).
The month with the lowest relative humidity is January (73%).
Average rainfall in May
Hillsboro, MD
- Average rainfall in May: 2.52"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.69").
Average rainfall days in May
Hillsboro, MD
- Average rainfall days in May: 16.4 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in May
Hillsboro, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Hillsboro, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Hillsboro, 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: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in May
Hillsboro, MD
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in May
Hillsboro, 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
Hillsboro, MD
- Average cloud cover in May: 41
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in May
Hillsboro, 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).





