May weather forecastFlower Hill, MD
May
Weather in May
May, the last month of the spring in Flower Hill, is a moderately hot month, with an average temperature fluctuating between 73.6°F (23.1°C) and 55°F (12.8°C).Temperature
With the onset of May, Flower Hill sees a temperature rise, with the average high-temperature moving from April's comfortable 63.9°F (17.7°C) to a warm 73.6°F (23.1°C). Nighttime temperature dips to a mean of 55°F (12.8°C) during May.Humidity
The months with the highest humidity are May, October and December, with an average relative humidity of 77%.Rainfall
In Flower Hill, in May, it is raining for 17.4 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, there are 154.8 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Flower Hill aggregates 0.16" (4mm) of snow. Throughout the year, there are 16.7 snowfall days, and 9.76" (248mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 20min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:28 pm EDT.
Sunshine
In Flower Hill, 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 value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 6 during May leads to these instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Flower Hill, MD
- Average high temperature in May: 73.6°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in May
Flower Hill, 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
Flower Hill, MD
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in May
Flower Hill, MD
- Average humidity in May: 77%
The months with the highest relative humidity are May, October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in May
Flower Hill, MD
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in May
Flower Hill, MD
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in May
Flower Hill, MD
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Flower Hill, MD
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Flower Hill, 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, February and December (Average sunshine: 5h and 6min).
Average sunshine days in May
Flower Hill, MD
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in May
Flower Hill, 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
Flower Hill, 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 30).
Average visibility in May
Flower Hill, 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).
