May weather forecast
Gwinn, WV

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Weather in May

May, the last month of the spring in Gwinn, is a moderately hot month, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 76.1°F (24.5°C).

Temperature

An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a comfortable 65.8°F (18.8°C) to a moderately hot 76.1°F (24.5°C). Despite a significant disparity with daytime temperatures, an average low-temperature of 54.5°F (12.5°C) is recorded during May.

Humidity

In Gwinn, West Virginia, the average relative humidity in May is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 19.6 days and typically aggregates up to 3.54" (90mm) of precipitation.

Snowfall

In Gwinn, snow does not fall in May through September.

Daylight

In Gwinn, the average length of the day in May is 14h and 17min.
On the first day of May, sunrise is at 6:30 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:46 pm EDT.

Sunshine

In Gwinn, the average sunshine in May is 9.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 6 in May translates into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in May?

The high-temperature during May is 76.1°F (24.5°C) and the low-temperature is 54.5°F (12.5°C).

What is the average humidity in May?

The average relative humidity in May is 78%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 19.6 days and accumulates 3.54" (90mm) of precipitation.

How many days does it rain in May?

In May, the rain falls for 19.6 days. Throughout May, 3.54" (90mm) of precipitation is accumulated.

When it does not snow?

In Gwinn, snow does not fall in May through September.

Does it snow in Gwinn in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Gwinn have in May?

In May, the average day length is 14h and 17min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:30 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:46 pm EDT.

How many hours of sunshine does Gwinn have in May?

In May, the average sunshine duration is 9.1h.

What is the month with the highest UV index?

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

What is the UV index reading in May?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Gwinn, WV

Average temperature in May - Gwinn, WV
  • Average high temperature in May: 76.1°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in May: 54.5°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in May
Gwinn, WV

Average pressure in May - Gwinn, WV
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in May
Gwinn, WV

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

The windiest month (with the highest average wind speed) is February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in May
Gwinn, WV

Average humidity in May - Gwinn, WV
  • Average humidity in May: 78%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (74%).

Average rainfall in May
Gwinn, WV

Average rainfall in May - Gwinn, WV
  • Average rainfall in May: 3.54"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in May
Gwinn, WV

Average rainfall days in May - Gwinn, WV
  • Average rainfall days in May: 19.6 days

The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is November (10.9 days).

Average snowfall in May
Gwinn, WV

Average snowfall in May - Gwinn, WV
  • Average snowfall in May: 0"

The month with the highest snowfall is January (3.62").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Gwinn, WV

Average snowfall days in May - Gwinn, WV
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Gwinn, 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: 9h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in May
Gwinn, WV

Average sunshine days in May - Gwinn, WV
  • Average sunshine days in May: 9.5 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (9.3 days).

Average UV index in May
Gwinn, WV

Average UV index in May - Gwinn, 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
Gwinn, WV

Average cloud cover in May - Gwinn, WV
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in May
Gwinn, WV

Average visibility in May - Gwinn, 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).

Gwinn, West Virginia, USA

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