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
An escalation in the average high-temperature is seen with the onset of May, moving from a frosty 49.6°F (9.8°C) in April to a refreshing 63.1°F (17.3°C). Mount Vernon throughout May, experiences an average nighttime temperature of 43.2°F (6.2°C).Humidity
In Mount Vernon, Maine, the average relative humidity in May is 78%.Rainfall
In Mount Vernon, in May, during 16 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Mount Vernon, during the entire year, the rain falls for 142.5 days and collects up to 30.47" (774mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Mount Vernon aggregates 0.71" (18mm) of snow. Throughout the year, there are 54.3 snowfall days, and 40.87" (1038mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 49min.On the first day of the month, sunrise is at 5:29 am and sunset at 7:44 pm. On the last day of May, sunrise is at 4:58 am and sunset at 8:17 pm EDT.
Sunshine
The average sunshine in May is 7.6h.UV index
In Mount Vernon, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 4 in May translates into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How many days does it rain in May in Mount Vernon?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Mount Vernon have in May?
How high is the UV index in May?
Average temperature in May
Mount Vernon, ME
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in May: 43.2°F
The month with the highest average low temperature is July (56.7°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in May
Mount Vernon, ME
- Average pressure in May: 29.98"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Mount Vernon, ME
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Mount Vernon, ME
- Average humidity in May: 78%
The months with the highest relative humidity are February and March (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in May
Mount Vernon, ME
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in May
Mount Vernon, ME
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Mount Vernon, ME
- Average snowfall in May: 0.71"
The month with the highest snowfall is February (9.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Mount Vernon, ME
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mount Vernon, ME
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in May
Mount Vernon, ME
- Average sunshine days in May: 12.9 days
The month with the most sunshine days is September (17.6 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in May
Mount Vernon, ME
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Mount Vernon, ME
- Average cloud cover in May: 51
The months with the most cloud cover are February, March and April (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in May
Mount Vernon, ME
- Average visibility in May: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (5mi).
Mount Vernon, Maine, USA
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