May weather forecastPiedmont, SC
May
Weather in May
May, the last month of the spring in Piedmont, is a moderately hot month, with an average temperature varying between 78.4°F (25.8°C) and 57.7°F (14.3°C).Temperature
May's onset brings a minor rise in the average high-temperature, moving from an agreeable 70.5°F (21.4°C) in April to a moderately hot 78.4°F (25.8°C). Piedmont's temperature tends to fall to an average low of 57.7°F (14.3°C) during the nights of May.Humidity
In May, the average relative humidity is 75%.Rainfall
In May, in Piedmont, the rain falls for 15.3 days. Throughout May, 3.15" (80mm) of precipitation is accumulated. Throughout the year, there are 150.6 rainfall days, and 32.64" (829mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Piedmont, the average length of the day in May is 13h and 59min.On the first day of May in Piedmont, sunrise is at 6:38 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:37 pm EDT.
Sunshine
In Piedmont, the average sunshine in May is 10h.UV index
The months with the highest UV index in Piedmont are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Piedmont, SC
- Average high temperature in May: 78.4°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in May: 57.7°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 (33.1°F).
Average pressure in May
Piedmont, SC
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in May
Piedmont, SC
- Average wind speed in May: 5.3mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in May
Piedmont, SC
- Average humidity in May: 75%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).
Average rainfall in May
Piedmont, SC
- Average rainfall in May: 3.15"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in May
Piedmont, SC
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in May
Piedmont, SC
- Average snowfall in May: 0"
The month with the highest snowfall is December (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Piedmont, SC
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Piedmont, SC
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in May
Piedmont, SC
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in May
Piedmont, SC
- 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 and December (UV index 2).
Average cloud cover in May
Piedmont, SC
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in May
Piedmont, SC
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
