May weather forecast
Swandale, WV

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Weather in May

The last month of the spring, May, is an agreeable month in Swandale, West Virginia, with an average temperature ranging between min 51.4°F (10.8°C) and max 71.2°F (21.8°C).

Temperature

In May, the average high-temperature increases from a comfortable 61.3°F (16.3°C) in April to a pleasant 71.2°F (21.8°C). Swandale observes an average nighttime temperature of 51.4°F (10.8°C) during May.

Humidity

The average relative humidity in May in Swandale is 80%.

Rainfall

May is the month with the most rainfall in Swandale. Rain falls for 23.3 days and accumulates 4.21" (107mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Swandale. During 0.3 snowfall days, in May, Swandale aggregates 0.39" (10mm) of snow. Throughout the year, in Swandale, there are 60.4 snowfall days, and 38.62" (981mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 17min.
On the first day of May in Swandale, sunrise is at 6:25 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:41 pm EDT.

Sunshine

In Swandale, West Virginia, the average sunshine in May is 8.9h.

UV index

In May, the average daily maximum UV index in Swandale is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 5 in May transforms into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

What is the temperature in May in Swandale?

The high-temperature, in May, in Swandale, is 71.2°F (21.8°C), while the low-temperature averages to 51.4°F (10.8°C).

What is the average humidity in May in Swandale?

In May, the average relative humidity in Swandale is 80%.

What is the rainiest month in Swandale?

May is the month with the most rainfall. Rain falls for 23.3 days and accumulates 4.21" (107mm) of precipitation.

How many days does it rain in May in Swandale?

In Swandale, West Virginia, during May, the rain falls for 23.3 days and regularly aggregates up to 4.21" (107mm) of precipitation.

What is the last month it snows in Swandale?

May is the last month it regularly snows in Swandale. During 0.3 snowfall days, in May, Swandale aggregates 0.39" (10mm) of snow.

How many hours of daylight does Swandale have in May?

In Swandale, West Virginia, the average day length in May is 14h and 17min.

When is the sunrise / sunset in May in Swandale?

In May, on the first day of the month, sunrise is at 6:25 am and sunset at 8:15 pm. On the last day of the month, in Swandale, West Virginia, sunrise is at 6:01 am and sunset at 8:41 pm EDT.

How many hours of sunshine does Swandale have in May?

In May, the average sunshine duration is 8.9h.

How high is the UV index in May in Swandale?

The average daily maximum UV index in May in Swandale, West Virginia, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Swandale, WV

Average temperature in May - Swandale, WV
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

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Average pressure in May
Swandale, WV

Average pressure in May - Swandale, 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).

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Average wind speed in May
Swandale, WV

Average wind speed in May - Swandale, WV
  • Average wind speed in May: 5.8mph

The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in May
Swandale, WV

Average humidity in May - Swandale, WV
  • Average humidity in May: 80%

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 (78%).

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Average rainfall in May
Swandale, WV

Average rainfall in May - Swandale, WV
  • Average rainfall in May: 4.21"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in May
Swandale, WV

Average rainfall days in May - Swandale, WV
  • Average rainfall days in May: 23.3 days

The month with the highest number of rainy days is May (23.3 days).
The month with the least rainy days is November (12.2 days).

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Average snowfall in May
Swandale, WV

Average snowfall in May - Swandale, WV
  • Average snowfall in May: 0.39"

The month with the highest snowfall is January (8.94").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Swandale, WV

Average snowfall days in May - Swandale, WV
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Swandale, WV

Average daylight in May / Average sunshine in May - Swandale, 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 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in May
Swandale, WV

Average sunshine days in May - Swandale, WV
  • Average sunshine days in May: 6.1 days

The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (6.1 days).

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Average UV index in May
Swandale, WV

Average UV index in May - Swandale, WV
  • 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, November and December (UV index 2).

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Average cloud cover in May
Swandale, WV

Average cloud cover in May - Swandale, WV
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in May
Swandale, WV

Average visibility in May - Swandale, WV
  • Average visibility in May: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

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Swandale, West Virginia, USA

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