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
May's arrival signals a temperature shift, moving from a refreshing 60.6°F (15.9°C) in April to an agreeable 71.2°F (21.8°C). In the month of May, the nighttime temperature in Hartsville dips to a steady average of 53.6°F (12°C).Humidity
In Hartsville, the average relative humidity in May is 76%.Rainfall
In Hartsville, in May, during 8.1 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 83.7 rainfall days, and 6.22" (158mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Hartsville aggregates 0.16" (4mm) of snow. In Hartsville, during the entire year, snow falls for 12.6 days and aggregates up to 1.73" (44mm) of snow.Daylight
The average length of the day in May is 14h and 26min.On the first day of the month, sunrise is at 5:58 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:23 pm EDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 6 in May translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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 much does it rain in May?
What is the last month it snows?
How many hours of daylight does Hartsville have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Hartsville have in May?
What are the months with the highest UV index?
What is the UV index intensity in May in Hartsville?
Average temperature in May
Hartsville, PA
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in May: 53.6°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Hartsville, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Hartsville, PA
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Hartsville, PA
- Average humidity in May: 76%
The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).
Average rainfall in May
Hartsville, PA
- Average rainfall in May: 0.59"
The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in May
Hartsville, PA
- Average rainfall days in May: 8.1 days
The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in May
Hartsville, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Hartsville, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Hartsville, PA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Hartsville, PA
- Average sunshine days in May: 19.6 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (17.4 days).
Average UV index in May
Hartsville, PA
- 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, February, March, November and December (UV index 2).
Average cloud cover in May
Hartsville, PA
- Average cloud cover in May: 46
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Hartsville, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Hartsville, Pennsylvania, USA
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