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 start of May brings a rise in the average high-temperature, moving from an enjoyable 65.8°F (18.8°C) in April to a warm 75.7°F (24.3°C). Throughout May, Sias braces for a considerable drop from daytime highs, with an average low-temperature of 54°F (12.2°C).Humidity
In Sias, the average relative humidity in May is 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 18.8 days and typically aggregates up to 3.07" (78mm) of precipitation.Snowfall
In Sias, West Virginia, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 16min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:19 pm. On the last day of May, in Sias, sunrise is at 6:06 am and sunset at 8:45 pm EDT.
Sunshine
In May, the average sunshine is 8.9h.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 radiation for the ordinary person.Note: A maximum high UV index of 6 in May translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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 many days does it rain in May?
When it does not snow?
Does it snow in Sias in May?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May in Sias?
What are the months with the highest UV index in Sias?
How high is the UV index in May?
Average temperature in May
Sias, WV
- Average high temperature in May: 75.7°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in May
Sias, WV
- 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
Sias, WV
- Average wind speed in May: 5.6mph
The windiest months (with the highest average wind speed) are January, February and April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in May
Sias, WV
- Average humidity in May: 78%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are August and November (75%).
Average rainfall in May
Sias, WV
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in May
Sias, WV
- Average rainfall days in May: 18.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in May
Sias, WV
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.82").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Sias, WV
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sias, WV
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Sias, WV
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in May
Sias, WV
- 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, November and December (UV index 2).
Average cloud cover in May
Sias, WV
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Sias, WV
- 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).
Sias, West Virginia, USA
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