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
May witnesses an increase in the average high-temperature, moving from an enjoyable 62.2°F (16.8°C) in April to a pleasant 71.4°F (21.9°C). The average temperature drops to a refreshing 55.9°F (13.3°C) during the night in the month of May.Humidity
With an average relative humidity of 79%, May is the most humid month.Rainfall
In Heather Heights, in May, during 10.7 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, in Heather Heights, there are 107.5 rainfall days, and 10.67" (271mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Heather Heights.Daylight
The average length of the day in May is 14h and 20min.On the first day of May, sunrise is at 6:04 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:24 pm EDT.
Sunshine
In May, the average sunshine in Heather Heights is 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 health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May in Heather Heights?
How many days does it rain in May in Heather Heights?
When it does not snow?
What is the average length of the day in May?
When is the sunrise / sunset in May in Heather Heights?
How long on average sun shines in May?
What are the months with the highest UV index in Heather Heights?
What is the UV index reading in May in Heather Heights?
Average temperature in May
Heather Heights, MD
- Average high temperature in May: 71.4°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in May: 55.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in May
Heather Heights, MD
- Average pressure in May: 30.01"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
Heather Heights, MD
- Average wind speed in May: 7.4mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in May
Heather Heights, MD
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in May
Heather Heights, MD
- Average rainfall in May: 0.87"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in May
Heather Heights, MD
- Average rainfall days in May: 10.7 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in May
Heather Heights, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Heather Heights, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.1 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
Heather 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in May
Heather Heights, MD
- Average sunshine days in May: 17.3 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in May
Heather 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
Heather Heights, MD
- Average cloud cover in May: 43
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
Heather 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).
Heather Heights, Maryland, USA
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