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 witnesses an increase in the average high-temperature, moving from a refreshing 66.6°F (19.2°C) in April to a moderately hot 75.9°F (24.4°C). In May, in Saint Helens, the average low-temperature is a fresh 55°F (12.8°C).Humidity
In May, the average relative humidity is 77%.Rainfall
The wettest months are February and May, with an average 3.46" (88mm) of rainfall.Snowfall
May through September are months without snowfall in Saint Helens.Daylight
In Saint Helens, the average length of the day in May is 14h and 13min.On the first day of May in Saint Helens, sunrise is at 6:38 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:49 pm EDT.
Sunshine
In May, the average sunshine in Saint Helens is 9.3h.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 exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 6 in May leads to these recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What is the average May temperature in Saint Helens?
What is the average humidity in May in Saint Helens?
What is the wettest month in Saint Helens?
How many days does it rain in May in Saint Helens?
When it does not snow in Saint Helens?
Does it snow in Saint Helens in May?
How many hours of daylight does Saint Helens have in May?
What time are sunrise and sunset in May in Saint Helens?
How many hours of sunshine does Saint Helens have in May?
When is the highest UV index in Saint Helens?
What is the UV index reading in May in Saint Helens?
Average temperature in May
Saint Helens, KY
- Average high temperature in May: 75.9°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in May
Saint Helens, KY
- Average pressure in May: 30.01"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in May
Saint Helens, KY
- Average wind speed in May: 5.9mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in May
Saint Helens, KY
- Average humidity in May: 77%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are June, August, October and November (75%).
Average rainfall in May
Saint Helens, KY
- Average rainfall in May: 3.46"
The wettest months (with the highest rainfall) are February and May (3.46").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in May
Saint Helens, KY
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in May
Saint Helens, KY
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Saint Helens, KY
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (9.6 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
Saint Helens, 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 June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Saint Helens, KY
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in May
Saint Helens, 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
Saint Helens, KY
- Average cloud cover in May: 41
The months with the most cloud cover are January and February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Saint Helens, KY
- Average visibility in May: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Saint Helens, Kentucky, USA
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