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 beginning of May marks a minor shift in the average high-temperature, moving from April's moderately hot 77.5°F (25.3°C) to a still warm 84.7°F (29.3°C). Rock Hill reports an average nighttime low-temperature of 66°F (18.9°C) in May.Heat index
May's average heat index is evaluated at a hot 91.4°F (33°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.In the scope of the heat index, its values resonate with shade and light wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
May and October, with an average relative humidity of 70%, are the least humid months.Rainfall
In May, the rain falls for 10.2 days. Throughout May, 0.94" (24mm) of precipitation is accumulated. In Rock Hill, during the entire year, the rain falls for 145 days and collects up to 17.91" (455mm) of precipitation.Snowfall
In Rock Hill, snow does not fall in February through December.Daylight
The average length of the day in May is 13h and 43min.On the first day of May, sunrise is at 5:59 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 7:42 pm CDT.
Sunshine
The average sunshine in May in Rock Hill is 10.9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 7 in May translates into these instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in May?
What is the least humid month?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Rock Hill have in May?
When are sunrise and sunset in May in Rock Hill?
How many hours of sunshine does Rock Hill have in May?
What are the months with the highest UV index?
How high is the UV index in May?
Average temperature in May
Rock Hill, FL
- Average high temperature in May: 84.7°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in May: 66°F
The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in May
Rock Hill, FL
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in May
Rock Hill, FL
- Average wind speed in May: 6mph
The windiest months (with the highest average wind speed) are January, February and March (7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
Rock Hill, FL
- Average humidity in May: 70%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are May and October (70%).
Average rainfall in May
Rock Hill, FL
- Average rainfall in May: 0.94"
The wettest month (with the highest rainfall) is August (2.95").
The driest months (with the least rainfall) are January and November (0.83").
Average rainfall days in May
Rock Hill, FL
- Average rainfall days in May: 10.2 days
The month with the highest number of rainy days is August (21.3 days).
The month with the least rainy days is November (6.8 days).
Average snowfall in May
Rock Hill, FL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Rock Hill, FL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Rock Hill, FL
- Average daylight in May: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in May: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in May
Rock Hill, FL
- Average sunshine days in May: 18.8 days
The month with the most sunshine days is November (21.8 days).
The months with the least sunshine days are July and August (6.3 days).
Average UV index in May
Rock Hill, FL
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in May
Rock Hill, FL
- Average cloud cover in May: 25
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in May
Rock Hill, FL
- 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, Florida, USA
Weather forecast for your location
2. Allow the app to use your location