May weather forecastSimpsonville, SC
May
Weather in May
As summer approaches, May brings a significant rise in the temperature in Simpsonville, South Carolina. This month acts as a bridge between spring and summer, with a distinct increase in heat compared to April. Despite the rising heat, the humidity levels remain comfortable, ensuring a pleasant climate. Summers kick off with May, getting the residents ready for the ensuing warm months. This month's warmth coupled with enough daylight makes it perfect for evening strolls and barbecues.Temperature
May marks a minor ascent in the average high-temperature, adjusting from April's agreeable 71.2°F (21.8°C) to a moderately hot 79.3°F (26.3°C). Simpsonville records a mean low-temperature of 58.6°F (14.8°C) in May.Humidity
The average relative humidity in May in Simpsonville is 75%.Rainfall
In May, the rain falls for 15.8 days. Throughout May, 3.35" (85mm) of precipitation is accumulated. Throughout the year, there are 163.9 rainfall days, and 35.51" (902mm) of precipitation is accumulated.Snowfall
In Simpsonville, snow does not fall in April through October.Daylight
The average length of the day in May is 14h and 0min.On the first day of May, sunrise is at 6:37 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:36 pm EDT.
Sunshine
In May, the average sunshine is 9.9h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 6 during May leads to these instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Simpsonville, SC
- Average high temperature in May: 79.3°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in May: 58.6°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in May
Simpsonville, 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 (29.98"Hg).
Average wind speed in May
Simpsonville, SC
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in May
Simpsonville, 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
Simpsonville, SC
- Average rainfall in May: 3.35"
The wettest month (with the highest rainfall) is December (4.09").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in May
Simpsonville, SC
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is October (9.6 days).
Average snowfall in May
Simpsonville, SC
- Average snowfall in May: 0"
The month with the highest snowfall is December (1.69").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Simpsonville, SC
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (1.4 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
Simpsonville, 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: 9h and 54min
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 24min).
Average sunshine days in May
Simpsonville, SC
- Average sunshine days in May: 12.9 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in May
Simpsonville, SC
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Simpsonville, SC
- Average cloud cover in May: 34
The months with the most cloud cover are February, March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in May
Simpsonville, 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).
