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
The start of May brings a rise in the average high-temperature, moving from a comfortable 61.9°F (16.6°C) in April to an agreeable 71.8°F (22.1°C). May nights are marked by an average low-temperature of 54.1°F (12.3°C).Humidity
With an average relative humidity of 80%, May is the most humid month.Rainfall
In May, the rain falls for 17.4 days. Throughout May, 2.83" (72mm) of precipitation is accumulated. In Perryville, during the entire year, the rain falls for 153.1 days and collects up to 31.5" (800mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows in Perryville. During 0.1 snowfall days, in May, Perryville aggregates 0.12" (3mm) of snow. Throughout the year, there are 17.4 snowfall days, and 8.15" (207mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 22min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:58 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:25 pm EDT.
Sunshine
In May, the average sunshine is 8.6h.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 health risk from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in May interprets into the following advice:
Fend off overexposure. Sun protection is vital. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the most humid month?
What is the average humidity in May?
How much does it rain in Perryville in May?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the month with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Perryville, MD
- Average high temperature in May: 71.8°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 (37.8°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in May
Perryville, 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
Perryville, MD
- Average wind speed in May: 6.9mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Perryville, MD
- Average humidity in May: 80%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (74%).
Average rainfall in May
Perryville, MD
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in May
Perryville, 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 November (8.7 days).
Average snowfall in May
Perryville, MD
- Average snowfall in May: 0.12"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Perryville, MD
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (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
Perryville, 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 24min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in May
Perryville, MD
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in May
Perryville, 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
Perryville, MD
- Average cloud cover in May: 46
The months with the most cloud cover are February, March and May (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Perryville, MD
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Perryville, Maryland, USA
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