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 moderately hot 76.1°F (24.5°C). Portersville experiences a significant contrast between daily highs and an average nighttime temperature of 54.5°F (12.5°C) during May.Humidity
In Portersville, the average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall in Portersville. Rain falls for 19.6 days and accumulates 3.54" (90mm) of precipitation.Snowfall
In Portersville, snow does not fall in May through September.Daylight
In Portersville, 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 8:20 pm. On the last day of May, sunrise is at 6:06 am and sunset at 8:46 pm EDT.
Sunshine
In May, the average sunshine in Portersville is 9.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Portersville. A UV Index reading of 6 to 7 represents a high health risk 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:
Take precautions against overexposure. Protection against sun damage is needed. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What is the temperature in May in Portersville?
What is the average humidity in May in Portersville?
What is the wettest month in Portersville?
How many days does it rain in May in Portersville?
When it does not snow in Portersville?
Does it snow in Portersville in May?
What is the average length of the day in May in Portersville?
When are sunrise and sunset in May in Portersville?
How long on average sun shines in May in Portersville?
What are the months with the highest UV index in Portersville?
How high is the UV index in May in Portersville?
Average temperature in May
Portersville, WV
- Average high temperature in May: 76.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in May: 54.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in May
Portersville, WV
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in May
Portersville, WV
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in May
Portersville, WV
- Average humidity in May: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in May
Portersville, WV
- Average rainfall in May: 3.54"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in May
Portersville, WV
- Average rainfall days in May: 19.6 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is November (10.9 days).
Average snowfall in May
Portersville, WV
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Portersville, 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
Portersville, 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 30min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Portersville, WV
- Average sunshine days in May: 9.5 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in May
Portersville, 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 and December (UV index 2).
Average cloud cover in May
Portersville, WV
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Portersville, 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).
Portersville, West Virginia, USA
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