May weather forecastHenderson, KY
May
Weather in May
Moving into May, Henderson witnesses further warming of the climate with temperatures ranging from 58.5°F (14.7°C) to 74.8°F (23.8°C). These conditions pave the way for outdoor events, with locals and visitors taking advantage of the pleasant temperatures. Despite experiencing the highest relative humidity of 80%, the amount of rainfall remains consistent with the prior month. This is a month of noticeable change with the increasingly longer days and higher UV index making sunscreen and protective clothing necessary. Winds remain relatively mild, creating a balance in the general weather conditions.Temperature
An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a comfortable 65.8°F (18.8°C) to a moderately hot 74.8°F (23.8°C). Throughout May, Henderson witnesses a nighttime temperature average of 58.5°F (14.7°C).Humidity
The most humid month is May, with an average relative humidity of 80%.Rainfall
In Henderson, during May, the rain falls for 14.4 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Henderson, during the entire year, the rain falls for 131.7 days and collects up to 15.47" (393mm) of precipitation.Snowfall
In Henderson, Kentucky, snow does not fall in April through October.Daylight
In May, the average length of the day is 14h and 14min.On the first day of the month, sunrise is at 5:53 am and sunset at 7:41 pm. On the last day of May, sunrise is at 5:29 am and sunset at 8:06 pm CDT.
Sunshine
The average sunshine in May is 9.4h.UV index
The months with the highest UV index 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 unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. 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. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Henderson, KY
- Average high temperature in May: 74.8°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (39.4°F).
- Average low temperature in May: 58.5°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in May
Henderson, KY
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Henderson, KY
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in May
Henderson, KY
- Average humidity in May: 80%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Henderson, KY
- Average rainfall in May: 1.61"
The wettest month (with the highest rainfall) is April (1.65").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in May
Henderson, KY
- Average rainfall days in May: 14.4 days
The months with the highest number of rainy days are May and July (14.4 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in May
Henderson, KY
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Henderson, KY
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Henderson, KY
- Average daylight in May: 14h and 12min
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 24min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in May
Henderson, KY
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in May
Henderson, 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 and December (UV index 2).
Average cloud cover in May
Henderson, KY
- Average cloud cover in May: 37
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in May
Henderson, KY
- 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).





