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
Rock Hill's transition into May brings a slight rise in the average high-temperature, moving from an agreeable 71.6°F (22°C) in April to a moderately hot 79.7°F (26.5°C). May nights in Rock Hill, South Carolina, observe an average temperature dip to an enjoyable 60.8°F (16°C).Humidity
In May, the average relative humidity in Rock Hill is 74%.Rainfall
In Rock Hill, during May, the rain falls for 16.2 days and regularly aggregates up to 2.76" (70mm) of precipitation. Throughout the year, there are 159 rainfall days, and 32.76" (832mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall in Rock Hill.Daylight
The average length of the day in May in Rock Hill, South Carolina, is 14h and 1min.On the first day of the month, sunrise is at 6:32 am and sunset at 8:09 pm. On the last day of May, in Rock Hill, sunrise is at 6:11 am and sunset at 8:32 pm EDT.
Sunshine
In May, the average sunshine is 9.5h.UV index
In Rock Hill, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in May interprets into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Rock Hill?
What is the average humidity in May in Rock Hill?
How many days does it rain in May in Rock Hill?
When it does not snow in Rock Hill?
How many hours of daylight does Rock Hill have in May?
What time are sunrise and sunset in May in Rock Hill?
How many hours of sunshine does Rock Hill have in May?
What is the UV index reading in May in Rock Hill?
Average temperature in May
Rock Hill, SC
- Average high temperature in May: 79.7°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in May: 60.8°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).
Average pressure in May
Rock Hill, 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
Rock Hill, SC
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Rock Hill, SC
- Average humidity in May: 74%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in May
Rock Hill, SC
- Average rainfall in May: 2.76"
The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in May
Rock Hill, SC
- Average rainfall days in May: 16.2 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in May
Rock Hill, SC
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Rock Hill, SC
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.7 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
Rock Hill, 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 54min).
- Average sunshine in May: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
Rock Hill, SC
- Average sunshine days in May: 13 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in May
Rock Hill, SC
- Average UV index in May: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Rock Hill, SC
- Average cloud cover in May: 38
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in May
Rock Hill, 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).
Rock Hill, South Carolina, USA
Weather forecast for your location
2. Allow the app to use your location