May weather forecast
Simpson, WV

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Weather in May

The last month of the spring, May, is an agreeable month in Simpson, West Virginia, with an average temperature varying between 71.6°F (22°C) and 51.1°F (10.6°C).

Temperature

Simpson sees an increase in the average high-temperature with the arrival of May, moving from April's comfortable 60.8°F (16°C) to a pleasant 71.6°F (22°C). The temperature lowers to an average of 51.1°F (10.6°C) during May nights.

Humidity

The average relative humidity in May in Simpson is 79%.

Rainfall

May is the month with the most rainfall in Simpson. Rain falls for 20.8 days and accumulates 4.06" (103mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Simpson. During 0.3 snowfall days, in May, Simpson aggregates 0.67" (17mm) of snow. In Simpson, during the entire year, snow falls for 58.4 days and aggregates up to 31.26" (794mm) of snow.

Daylight

The average length of the day in May in Simpson is 14h and 21min.
On the first day of the month, sunrise is at 6:20 am and sunset at 8:14 pm. On the last day of May, sunrise is at 5:55 am and sunset at 8:40 pm EDT.

Sunshine

The average sunshine in May in Simpson is 8.7h.

UV index

In Simpson, West Virginia, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 5 in May transforms into this advice:
Heed the precautions - It is counselled to guard against solar damage. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the usual temperature for Simpson in May?

During May, Simpson experiences an average high-temperature of 71.6°F (22°C) and a low-temperature of 51.1°F (10.6°C).

What is the average humidity in May in Simpson?

In Simpson, West Virginia, the average relative humidity in May is 79%.

What is the wettest month in Simpson?

May is the month with the most rainfall in Simpson, West Virginia. Rain falls for 20.8 days and accumulates 4.06" (103mm) of precipitation.

How many days does it rain in May in Simpson?

In May, in Simpson, the rain falls for 20.8 days. Throughout May, 4.06" (103mm) of precipitation is accumulated.

What is the last month it snows in Simpson?

May is the last month it regularly snows in Simpson, West Virginia. During 0.3 snowfall days, in May, Simpson aggregates 0.67" (17mm) of snow.

What is the average length of the day in May in Simpson?

In Simpson, West Virginia, the average day length in May is 14h and 21min.

When are sunrise and sunset in May in Simpson?

On the first day of May, sunrise is at 6:20 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:40 pm EDT.

How long on average sun shines in May in Simpson?

The average sunshine duration in May is 8.7h.

How high is the UV index in May in Simpson?

In May, the average daily maximum UV index in Simpson is 5. A UV Index reading of 3 to 5 represents a moderate health threat from 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
Simpson, WV

Average temperature in May - Simpson, WV
  • Average high temperature in May: 71.6°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in May: 51.1°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 (21.7°F).

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Average pressure in May
Simpson, WV

Average pressure in May - Simpson, WV
  • Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in May
Simpson, WV

Average wind speed in May - Simpson, WV
  • Average wind speed in May: 5.7mph

The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in May
Simpson, WV

Average humidity in May - Simpson, 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 July and August (77%).

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Average rainfall in May
Simpson, WV

Average rainfall in May - Simpson, WV
  • Average rainfall in May: 4.06"

The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in May
Simpson, WV

Average rainfall days in May - Simpson, WV
  • Average rainfall days in May: 20.8 days

The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is February (11.9 days).

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Average snowfall in May
Simpson, WV

Average snowfall in May - Simpson, WV
  • Average snowfall in May: 0.67"

The month with the highest snowfall is January (7.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Simpson, WV

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

The month with the highest number of snowfall days is January (16.8 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
Simpson, WV

Average daylight in May / Average sunshine in May - Simpson, WV
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 8h and 4min

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 12min).

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Average sunshine days in May
Simpson, WV

Average sunshine days in May - Simpson, WV
  • Average sunshine days in May: 8.8 days

The month with the most sunshine days is October (13.7 days).
The month with the least sunshine days is January (6.5 days).

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Average UV index in May
Simpson, WV

Average UV index in May - Simpson, 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).

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Average cloud cover in May
Simpson, WV

Average cloud cover in May - Simpson, WV
  • Average cloud cover in May: 45

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in May
Simpson, WV

Average visibility in May - Simpson, 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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Simpson, West Virginia, USA

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