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 arrival of May brings a change in Saint Clairsville's weather, with average high-temperatures moving from April's moderate 59.2°F (15.1°C) to a pleasant 69.4°F (20.8°C). The average low-temperature of 49.1°F (9.5°C) is witnessed in Saint Clairsville, Pennsylvania, during May.Humidity
The average relative humidity in May is 79%.Rainfall
May is the month with the most rainfall. Rain falls for 15.3 days and accumulates 1.81" (46mm) of precipitation.Snowfall
In Saint Clairsville, snow does not fall in May through September.Daylight
The average length of the day in May in Saint Clairsville is 14h and 25min.On the first day of the month, sunrise is at 6:12 am and sunset at 8:09 pm. On the last day of May, sunrise is at 5:46 am and sunset at 8:36 pm EDT.
Sunshine
The average sunshine in May is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
What is the wettest month?
How much does it rain in May?
When it does not snow in Saint Clairsville?
Does it snow in May?
How many hours of daylight does Saint Clairsville have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Saint Clairsville, PA
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in May
Saint Clairsville, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Saint Clairsville, PA
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Saint Clairsville, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in May
Saint Clairsville, PA
- Average rainfall in May: 1.81"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in May
Saint Clairsville, PA
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in May
Saint Clairsville, PA
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Saint Clairsville, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Saint Clairsville, PA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Saint Clairsville, PA
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is December (20.2 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in May
Saint Clairsville, PA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Saint Clairsville, PA
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in May
Saint Clairsville, PA
- 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).
Saint Clairsville, Pennsylvania, USA
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