May weather forecast
Crystal Block, WV

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Weather in May

May, the last month of the spring in Crystal Block, is a moderately hot month, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 75.2°F (24°C).

Temperature

The arrival of May brings a change in Crystal Block's weather, with average high-temperatures moving from April's comfortable 65.5°F (18.6°C) to a warm 75.2°F (24°C). May nights indicate a noticeable temperature drop from the daytime highs, with an average reading lowering to a fresh 53.6°F (12°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 20.2 days and typically aggregates up to 3.74" (95mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Crystal Block aggregates 0.04" (1mm) of snow. Throughout the year, there are 38.9 snowfall days, and 17.48" (444mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 13min.
On the first day of the month, sunrise is at 6:31 am and sunset at 8:18 pm. On the last day of May, in Crystal Block, sunrise is at 6:07 am and sunset at 8:43 pm EDT.

Sunshine

In Crystal Block, the average sunshine in May is 9h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in May leads to these recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

In Crystal Block, 75.2°F (24°C) is the average high-temperature and 53.6°F (12°C) is the average low-temperature during May.

What is the average humidity in May?

In May, the average relative humidity is 78%.

What is the rainiest month?

The month with the most rainfall is May, when the rain falls for 20.2 days and typically aggregates up to 3.74" (95mm) of precipitation.

How many days does it rain in May?

In May, the rain falls for 20.2 days. Throughout May, 3.74" (95mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows in Crystal Block. During 0.2 snowfall days, in May, Crystal Block aggregates 0.04" (1mm) of snow.

How many hours of daylight does Crystal Block have in May?

In Crystal Block, the average day length in May is 14h and 13min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:31 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 8:43 pm EDT.

How many hours of sunshine does Crystal Block have in May?

The average sunshine duration in May is 9h.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index reading in May in Crystal Block?

In Crystal Block, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Crystal Block, WV

Average temperature in May - Crystal Block, WV
  • Average high temperature in May: 75.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in May: 53.6°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in May
Crystal Block, WV

Average pressure in May - Crystal Block, 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
Crystal Block, WV

Average wind speed in May - Crystal Block, WV
  • Average wind speed in May: 5.5mph

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 (4mph).

Average humidity in May
Crystal Block, WV

Average humidity in May - Crystal Block, WV
  • Average humidity in May: 78%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April, June, July, August and November (76%).

Average rainfall in May
Crystal Block, WV

Average rainfall in May - Crystal Block, WV
  • Average rainfall in May: 3.74"

The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in May
Crystal Block, WV

Average rainfall days in May - Crystal Block, WV
  • Average rainfall days in May: 20.2 days

The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is November (10.8 days).

Average snowfall in May
Crystal Block, WV

Average snowfall in May - Crystal Block, WV
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Crystal Block, WV

Average snowfall days in May - Crystal Block, WV
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Crystal Block, WV

Average daylight in May / Average sunshine in May - Crystal Block, WV
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 9h and 0min

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).

Average sunshine days in May
Crystal Block, WV

Average sunshine days in May - Crystal Block, WV
  • Average sunshine days in May: 9.7 days

The months with the most sunshine days are October and November (17 days).
The month with the least sunshine days is February (8.8 days).

Average UV index in May
Crystal Block, WV

Average UV index in May - Crystal Block, 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
Crystal Block, WV

Average cloud cover in May - Crystal Block, WV
  • Average cloud cover in May: 43

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
Crystal Block, WV

Average visibility in May - Crystal Block, 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).

Crystal Block, West Virginia, USA

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