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
As May begins, there is an increase in the average high-temperature, moving from an enjoyable 65.8°F (18.8°C) in April to a warm 75.6°F (24.2°C). Against the high May temperatures, South Williamson records an average drop to a cool 54°F (12.2°C) at night.Humidity
In South Williamson, the average relative humidity in May is 78%.Rainfall
The wettest months are February and May, with an average 3.27" (83mm) of rainfall.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, South Williamson aggregates 0.2" (5mm) of snow. In South Williamson, during the entire year, snow falls for 32.9 days and aggregates up to 16.81" (427mm) of snow.Daylight
The average length of the day in May in South Williamson is 14h and 13min.On the first day of the month, sunrise is at 6:32 am and sunset at 8:19 pm. On the last day of May, in South Williamson, sunrise is at 6:09 am and sunset at 8:44 pm EDT.
Sunshine
In May, the average sunshine is 9.3h.UV index
In South Williamson, Kentucky, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the UV index of 5 transforms into the following advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What is the temperature in May in South Williamson?
What is the average humidity in May in South Williamson?
What is the rainiest month in South Williamson?
How many days does it rain in May in South Williamson?
What is the last month it snows in South Williamson?
What is the average length of the day in May in South Williamson?
When is the sunrise / sunset in May in South Williamson?
How long on average sun shines in May in South Williamson?
What is the UV index reading in May in South Williamson?
Average temperature in May
South Williamson, KY
- Average high temperature in May: 75.6°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in May
South Williamson, KY
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
South Williamson, KY
- Average wind speed in May: 5.5mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in May
South Williamson, KY
- Average humidity in May: 78%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are July, August and November (75%).
Average rainfall in May
South Williamson, KY
- Average rainfall in May: 3.27"
The wettest months (with the highest rainfall) are February and May (3.27").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in May
South Williamson, KY
- Average rainfall days in May: 18.2 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in May
South Williamson, KY
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
South Williamson, KY
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
South Williamson, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
South Williamson, KY
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in May
South Williamson, KY
- Average UV index in May: 5
The months with the highest UV index are June 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
South Williamson, KY
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
South Williamson, 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).
South Williamson, Kentucky, USA
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