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 signals an increase in the average high-temperature, moving from a refreshing 56.8°F (13.8°C) in April to an agreeable 69.3°F (20.7°C). May witnesses an average nighttime temperature of 48.6°F (9.2°C).Humidity
The months with the lowest humidity in Greenville are May through July, with an average relative humidity of 79%.Rainfall
In Greenville, in May, it is raining for 17.6 days, with typically 2.28" (58mm) of accumulated precipitation. In Greenville, during the entire year, the rain falls for 167.1 days and collects up to 24.25" (616mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.5 snowfall days, in May, Greenville aggregates 0.24" (6mm) of snow. Throughout the year, there are 79.6 snowfall days, and 25" (635mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 32min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:19 pm. On the last day of May, in Greenville, sunrise is at 5:50 am and sunset at 8:48 pm EDT.
Sunshine
In Greenville, the average sunshine in May is 8.5h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Be vigilant - Preventing sunburn is recommended. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Greenville in May?
What are the least humid months?
What is the average humidity in May in Greenville?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Greenville have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Greenville have in May?
What is the UV index reading in May?
Average temperature in May
Greenville, PA
- Average high temperature in May: 69.3°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in May: 48.6°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in May
Greenville, PA
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Greenville, PA
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in May
Greenville, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in May
Greenville, PA
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in May
Greenville, PA
- Average rainfall days in May: 17.6 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8 days).
Average snowfall in May
Greenville, PA
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Greenville, PA
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (19.9 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, PA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Greenville, PA
- Average sunshine days in May: 11.2 days
The month with the most sunshine days is August (12.6 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in May
Greenville, PA
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Greenville, PA
- Average cloud cover in May: 47
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in May
Greenville, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
Greenville, Pennsylvania, USA
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