May weather forecastSmyrna, SC
May
Weather in May
The last month of the spring, May, is a moderately hot month in Smyrna, South Carolina, with an average temperature varying between 58.6°F (14.8°C) and 79.3°F (26.3°C).Temperature
In Smyrna, stepping into May brings a gentle temperature nudge, moving slightly up from April's pleasant 71.4°F (21.9°C) to a warm 79.3°F (26.3°C). During the month of May, Smyrna anticipates a mean low-temperature of 58.6°F (14.8°C).Humidity
In May, the average relative humidity is 75%.Rainfall
In Smyrna, South Carolina, in May, it is raining for 15.4 days, with typically 2.13" (54mm) of accumulated precipitation. In Smyrna, during the entire year, the rain falls for 150.1 days and collects up to 27.68" (703mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In May, the average length of the day is 14h and 1min.On the first day of May, sunrise is at 6:33 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:34 pm EDT.
Sunshine
The average sunshine in May is 9.7h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 6 in May leads to these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Smyrna, SC
- Average high temperature in May: 79.3°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in May: 58.6°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).
Average pressure in May
Smyrna, 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
Smyrna, SC
- Average wind speed in May: 5.6mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in May
Smyrna, SC
- Average humidity in May: 75%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in May
Smyrna, SC
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is October (1.73").
Average rainfall days in May
Smyrna, SC
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in May
Smyrna, 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, October and November (0").
Average snowfall days in May
Smyrna, SC
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Smyrna, SC
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 9h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
Smyrna, SC
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in May
Smyrna, 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
Smyrna, SC
- Average cloud cover in May: 38
The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 30).
Average visibility in May
Smyrna, SC
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
