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's arrival is marked by an increase in the average high-temperature, moving from a comfortable 60.8°F (16°C) in April to a pleasant 71.4°F (21.9°C). May nights cool down to an average low-temperature of 51.4°F (10.8°C).Humidity
In Helvetia, the average relative humidity in May is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 21.3 days and typically aggregates up to 4.33" (110mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Helvetia. May is the last month it regularly snows. During 0.3 snowfall days, in May, Helvetia aggregates 0.75" (19mm) of snow. Throughout the year, in Helvetia, there are 62.1 snowfall days, and 37.83" (961mm) of snow is accumulated.Daylight
In May, the average length of the day in Helvetia, West Virginia, is 14h and 18min.On the first day of the month, sunrise is at 6:22 am and sunset at 8:13 pm. On the last day of May, in Helvetia, sunrise is at 5:57 am and sunset at 8:39 pm EDT.
Sunshine
In Helvetia, the average sunshine in May is 8.8h.UV index
In Helvetia, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What are May temperatures in Helvetia?
What is the average humidity in May in Helvetia?
What is the wettest month in Helvetia?
How much does it rain in Helvetia in May?
What is the last month it snows in Helvetia?
How many hours of daylight does Helvetia have in May?
When are sunrise and sunset in May in Helvetia?
How long on average sun shines in May in Helvetia?
How high is the UV index in May in Helvetia?
Average temperature in May
Helvetia, WV
- Average high temperature in May: 71.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 51.4°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 (22.5°F).
Average pressure in May
Helvetia, WV
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in May
Helvetia, WV
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in May
Helvetia, WV
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are June, July, August and November (77%).
Average rainfall in May
Helvetia, WV
- Average rainfall in May: 4.33"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in May
Helvetia, WV
- Average rainfall days in May: 21.3 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is February (11.4 days).
Average snowfall in May
Helvetia, WV
- Average snowfall in May: 0.75"
The month with the highest snowfall is January (9.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Helvetia, WV
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Helvetia, 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: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Helvetia, WV
- Average sunshine days in May: 7.7 days
The month with the most sunshine days is November (13.2 days).
The month with the least sunshine days is February (7.2 days).
Average UV index in May
Helvetia, WV
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Helvetia, WV
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Helvetia, WV
- Average visibility in May: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is January (4mi).
Helvetia, West Virginia, USA
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