May weather forecast
Alderson, WV

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Weather in May

May in Alderson, West Virginia, brings the beautiful bloom of spring to its peak and opens the doors to the summer season. This month sees a significant jump in temperatures with daily highs averaging at 70°F (21.1°C). Clear days are more apparent in May as the city sees the highest UV index of 5. The abundant sunshine coupled with warmth typically attracts more outdoor activities and marks the busy season for tourism. The transition from May to June incurs further rise in temperatures, making way for traditional summer heat.

Temperature

Observing a rise in May, the average high-temperature in Alderson goes from April's moderate 60.6°F (15.9°C) to an agreeable 70°F (21.1°C). Throughout May, the temperature falls to an average low of 49.1°F (9.5°C).

Humidity

The average relative humidity in May is 81%.

Rainfall

May is the month with the most rainfall. Rain falls for 22.2 days and accumulates 3.39" (86mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Alderson. May is the last month it regularly snows in Alderson. During 0.3 snowfall days, in May, Alderson aggregates 0.24" (6mm) of snow. In Alderson, during the entire year, snow falls for 44.3 days and aggregates up to 20.67" (525mm) of snow.

Daylight

In Alderson, the average length of the day in May is 14h and 13min.
On the first day of May, sunrise is at 6:25 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:38 pm EDT.

Sunshine

In Alderson, the average sunshine in May is 8.6h.

UV index

The months with the highest UV index in Alderson are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Boost your sun resistance with garments that are densely woven yet spacious. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What is the usual temperature for Alderson in May?

The high-temperature, in May, in Alderson, records 70°F (21.1°C), while the low-temperature is 49.1°F (9.5°C).

What is the average humidity in May in Alderson?

In May, the average relative humidity is 81%.

What is the rainiest month in Alderson?

The month with the most rainfall is May, when the rain falls for 22.2 days and typically aggregates up to 3.39" (86mm) of precipitation.

How many days does it rain in May in Alderson?

In Alderson, in May, during 22.2 rainfall days, 3.39" (86mm) of precipitation is typically accumulated.

What is the last month it snows in Alderson?

May is the last month it regularly snows in Alderson. During 0.3 snowfall days, in May, Alderson aggregates 0.24" (6mm) of snow.

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

The average day length in May in Alderson is 14h and 13min.

When are sunrise and sunset in May in Alderson?

On the first day of May in Alderson, sunrise is at 6:25 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:38 pm EDT.

How long on average sun shines in May in Alderson?

The average sunshine duration in May is 8.6h.

What is the month with the highest UV index in Alderson?

The months with the highest UV index in Alderson, West Virginia, are May through August, with an average maximum UV index of 5.

What is the UV index reading in May in Alderson?

The average daily maximum UV index in May in Alderson is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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
Alderson, WV

Average temperature in May - Alderson, WV
  • Average high temperature in May: 70°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in May: 49.1°F

The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

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Average pressure in May
Alderson, WV

Average pressure in May - Alderson, 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
Alderson, WV

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

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 (4mph).

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Average humidity in May
Alderson, WV

Average humidity in May - Alderson, WV
  • Average humidity in May: 81%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is June (78%).

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Average rainfall in May
Alderson, WV

Average rainfall in May - Alderson, WV
  • Average rainfall in May: 3.39"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in May
Alderson, WV

Average rainfall days in May - Alderson, WV
  • Average rainfall days in May: 22.2 days

The month with the highest number of rainy days is May (22.2 days).
The month with the least rainy days is November (10.2 days).

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Average snowfall in May
Alderson, WV

Average snowfall in May - Alderson, WV
  • Average snowfall in May: 0.24"

The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Alderson, WV

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

The month with the highest number of snowfall days is January (12.3 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
Alderson, WV

Average daylight in May / Average sunshine in May - Alderson, 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: 8h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in May
Alderson, WV

Average sunshine days in May - Alderson, WV
  • Average sunshine days in May: 7.7 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (7.7 days).

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Average UV index in May
Alderson, WV

Average UV index in May - Alderson, WV
  • Average UV index in May: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in May
Alderson, WV

Average cloud cover in May - Alderson, WV
  • Average cloud cover in May: 49

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 40).

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Average visibility in May
Alderson, WV

Average visibility in May - Alderson, WV
  • Average visibility in May: 4mi

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

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Alderson, West Virginia, USA

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