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 start of May is characterized by an increase in the average high-temperature, transitioning from an enjoyable 64.8°F (18.2°C) in April to a moderately hot 74.1°F (23.4°C). Nighttime temperature in Hartley, Kentucky, experiences an average drop to a cool 53.1°F (11.7°C) in May.Humidity
The average relative humidity in May is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 22.2 days and typically aggregates up to 4.21" (107mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Hartley. May is the last month it regularly snows. During 0.3 snowfall days, in May, Hartley aggregates 0.24" (6mm) of snow. In Hartley, during the entire year, snow falls for 46.1 days and aggregates up to 24.8" (630mm) of snow.Daylight
The average length of the day in May in Hartley, Kentucky, is 14h and 11min.On the first day of the month, sunrise is at 6:34 am and sunset at 8:20 pm. On the last day of May, sunrise is at 6:11 am and sunset at 8:45 pm EDT.
Sunshine
In May, the average sunshine is 9.2h.UV index
The months with the highest UV index in Hartley are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hartley in May?
What is the average humidity in May in Hartley?
What is the rainiest month in Hartley?
How many days does it rain in May in Hartley?
What is the last month it snows in Hartley?
What is the average length of the day in May in Hartley?
What time are sunrise and sunset in May in Hartley?
How long on average sun shines in May in Hartley?
What are the months with the highest UV index in Hartley?
How high is the UV index in May in Hartley?
Average temperature in May
Hartley, KY
- Average high temperature in May: 74.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in May: 53.1°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in May
Hartley, KY
- Average pressure in May: 30.02"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in May
Hartley, KY
- Average wind speed in May: 5.5mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in May
Hartley, KY
- Average humidity in May: 79%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in May
Hartley, KY
- Average rainfall in May: 4.21"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (2.48").
Average rainfall days in May
Hartley, KY
- Average rainfall days in May: 22.2 days
The month with the highest number of rainy days is May (22.2 days).
The month with the least rainy days is February (12.3 days).
Average snowfall in May
Hartley, KY
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Hartley, KY
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Hartley, KY
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 9h and 1min
The months with the most sunshine are June and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in May
Hartley, KY
- Average sunshine days in May: 6.8 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in May
Hartley, KY
- 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, November and December (UV index 2).
Average cloud cover in May
Hartley, KY
- Average cloud cover in May: 42
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Hartley, KY
- Average visibility in May: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Hartley, Kentucky, USA
Weather forecast for your location
2. Allow the app to use your location