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 shift from April to May sees an increase in the average high-temperature, transitioning from a refreshing 65.7°F (18.7°C) to a moderately hot 74.8°F (23.8°C). Contrasted against daytime highs, Harlan records an average nighttime low of 53.1°F (11.7°C) in May.Humidity
In Harlan, the average relative humidity in May is 79%.Rainfall
In Harlan, in May, it is raining for 19.9 days, with typically 3.54" (90mm) of accumulated precipitation. In Harlan, during the entire year, the rain falls for 190.4 days and collects up to 40.28" (1023mm) of precipitation.Snowfall
In Harlan, snow does not fall in May through September.Daylight
In Harlan, the average length of the day in May is 14h and 9min.On the first day of May in Harlan, sunrise is at 6:38 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:46 pm EDT.
Sunshine
The average sunshine in May is 9.5h.UV index
May, June and August, with an average maximum UV index of 6, are months with the highest UV index in Harlan. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 6 in May leads to these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Harlan?
What is the average humidity in May in Harlan?
How much does it rain in Harlan in May?
When it does not snow in Harlan?
Does it snow in Harlan in May?
What is the average length of the day in May in Harlan?
When are sunrise and sunset in May in Harlan?
How many hours of sunshine does Harlan have in May?
What is the month with the highest UV index in Harlan?
What is the UV index intensity in May in Harlan?
Average temperature in May
Harlan, KY
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in May: 53.1°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in May
Harlan, 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 (29.98"Hg).
Average wind speed in May
Harlan, KY
- Average wind speed in May: 5.3mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in May
Harlan, 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, June, August and November (77%).
Average rainfall in May
Harlan, KY
- Average rainfall in May: 3.54"
The wettest month (with the highest rainfall) is February (4.57").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in May
Harlan, KY
- Average rainfall days in May: 19.9 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is November (11.5 days).
Average snowfall in May
Harlan, KY
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Harlan, KY
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Harlan, KY
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Harlan, KY
- Average sunshine days in May: 9.1 days
The month with the most sunshine days is October (15.8 days).
The month with the least sunshine days is May (9.1 days).
Average UV index in May
Harlan, KY
- Average UV index in May: 6
The months with the highest UV index are May, June 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
Harlan, KY
- Average cloud cover in May: 40
The months with the most cloud cover are January and February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Harlan, 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).
Harlan, Kentucky, USA
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