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 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 shift from April to May is marked by a slight increase in the average high-temperature, moving from a warm 74.1°F (23.4°C) to a still moderately hot 80.8°F (27.1°C). In Joshua, an average temperature of 66.7°F (19.3°C) is noted during May nights.Heat index
Throughout May, the heat index is calculated to be 84.2°F (29°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In May, the average relative humidity is 75%.Rainfall
In Joshua, in May, it is raining for 13.4 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 154.4 rainfall days, and 23.43" (595mm) of precipitation is accumulated.Snowfall
In Joshua, snow does not fall in March through November.Daylight
The average length of the day in May is 13h and 52min.On the first day of May, sunrise is at 6:31 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:23 pm EDT.
Sunshine
In May, the average sunshine is 10.4h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 7 in May translates into this advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
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 Joshua have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What are the months with the highest UV index in Joshua?
What is the UV index intensity in May?
Average temperature in May
Joshua, SC
- Average high temperature in May: 80.8°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in May: 66.7°F
The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).
Average pressure in May
Joshua, SC
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
Joshua, SC
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in May
Joshua, SC
- Average humidity in May: 75%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).
Average rainfall in May
Joshua, SC
- Average rainfall in May: 1.42"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in May
Joshua, SC
- Average rainfall days in May: 13.4 days
The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.9 days).
Average snowfall days in May
Joshua, SC
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Joshua, SC
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in May
Joshua, SC
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (6.1 days).
Average UV index in May
Joshua, SC
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in May
Joshua, SC
- Average cloud cover in May: 29
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in May
Joshua, 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).
Joshua, South Carolina, USA
Weather forecast for your location
2. Allow the app to use your location