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 arrival of May is marked by a notable increase in high-temperatures, climbing from a frosty 44.6°F (7°C) in April to a moderate 59.7°F (15.4°C). Greenville's nighttime temperature in May falls to an average of 41°F (5°C).Humidity
May is the least humid month, with an average relative humidity of 77%.Rainfall
In Greenville, in May, it is raining for 17.7 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, in Greenville, Maine, there are 147.1 rainfall days, and 34.65" (880mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1.1 snowfall days, in May, Greenville aggregates 1.22" (31mm) of snow. In Greenville, during the entire year, snow falls for 104.3 days and aggregates up to 76.26" (1937mm) of snow.Daylight
The average length of the day in May is 14h and 55min.On the first day of the month, sunrise is at 5:25 am and sunset at 7:45 pm. On the last day of May, sunrise is at 4:53 am and sunset at 8:19 pm EDT.
Sunshine
In May, the average sunshine is 7h.UV index
In Greenville, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 4 during May translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Opt for tightly woven and loose clothing to enhance protection from the Sun. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Greenville in May?
What is the least humid month?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows in Greenville?
How many hours of daylight does Greenville have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Greenville, ME
- Average high temperature in May: 59.7°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in May: 41°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in May
Greenville, 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 (29.9"Hg).
Average wind speed in May
Greenville, ME
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in May
Greenville, ME
- Average humidity in May: 77%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (77%).
Average rainfall in May
Greenville, ME
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is February (2.24").
Average rainfall days in May
Greenville, ME
- Average rainfall days in May: 17.7 days
The months with the highest number of rainy days are July and August (17.8 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in May
Greenville, ME
- Average snowfall in May: 1.22"
The month with the highest snowfall is January (14.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Greenville, ME
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is February (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Greenville, ME
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 7h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in May
Greenville, ME
- Average sunshine days in May: 11.2 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in May
Greenville, ME
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in May
Greenville, ME
- Average cloud cover in May: 57
The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility in May
Greenville, ME
- Average visibility in May: 5mi
The months with the highest visibility are May, July, October and November (5mi).
The months with the lowest visibility are January, February, March, April, June, August, September and December (4mi).
Greenville, Maine, USA
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