May weather forecast
Riverton, WV

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Weather in May

The last month of the spring, May, is a pleasant month in Riverton, West Virginia, with an average temperature fluctuating between 49.5°F (9.7°C) and 71.2°F (21.8°C).

Temperature

Riverton sees a rise in temperature during May, with average high-temperatures transitioning from an enjoyable 60.8°F (16°C) in April to an agreeable 71.2°F (21.8°C). Riverton experiences a substantial decline from the daytime high temperatures in May, settling on an average low of 49.5°F (9.7°C).

Humidity

In Riverton, the average relative humidity in May is 78%.

Rainfall

May is the month with the most rainfall in Riverton. Rain falls for 18.3 days and accumulates 2.91" (74mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Riverton. May is the last month it regularly snows. During 0.3 snowfall days, in May, Riverton aggregates 0.16" (4mm) of snow. In Riverton, during the entire year, snow falls for 37.9 days and aggregates up to 15.91" (404mm) of snow.

Daylight

In Riverton, the average length of the day in May is 14h and 18min.
On the first day of May, sunrise is at 6:19 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:36 pm EDT.

Sunshine

The average sunshine in May in Riverton is 9.1h.

UV index

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 5 during May morphs into the following directions:
Undertake precautions - Guarding against sun damage is counselled. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What is the usual temperature for Riverton in May?

In May, in Riverton, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 49.5°F (9.7°C).

What is the average humidity in May in Riverton?

In May, the average relative humidity in Riverton is 78%.

What is the wettest month in Riverton?

The month with the most rainfall is May, when the rain falls for 18.3 days and typically aggregates up to 2.91" (74mm) of precipitation.

How much does it rain in Riverton in May?

In Riverton, West Virginia, in May, it is raining for 18.3 days, with typically 2.91" (74mm) of accumulated precipitation.

What is the last month it snows in Riverton?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Riverton aggregates 0.16" (4mm) of snow.

How many hours of daylight does Riverton have in May?

In May, the average day length in Riverton, West Virginia, is 14h and 18min.

When is the sunrise / sunset in May in Riverton?

In May, on the first day of the month, sunrise is at 6:19 am and sunset at 8:10 pm. On the last day of the month, in Riverton, West Virginia, sunrise is at 5:54 am and sunset at 8:36 pm EDT.

How many hours of sunshine does Riverton have in May?

In May, the average sunshine duration in Riverton is 9.1h.

What is the UV index reading in May in Riverton?

The average daily maximum UV index in May in Riverton is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Riverton, WV

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

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (36.3°F).

  • Average low temperature in May: 49.5°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in May
Riverton, WV

Average pressure in May - Riverton, WV
  • Average pressure in May: 30.01"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
Riverton, WV

Average wind speed in May - Riverton, WV
  • Average wind speed in May: 5.6mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in May
Riverton, WV

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

The months with the highest relative humidity are February, September, October and December (79%).
The months with the lowest relative humidity are April, June and July (75%).

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Average rainfall in May
Riverton, WV

Average rainfall in May - Riverton, WV
  • Average rainfall in May: 2.91"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is November (1.73").

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Average rainfall days in May
Riverton, WV

Average rainfall days in May - Riverton, WV
  • Average rainfall days in May: 18.3 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (11.6 days).

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Average snowfall in May
Riverton, WV

Average snowfall in May - Riverton, WV
  • Average snowfall in May: 0.16"

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

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Average snowfall days in May
Riverton, WV

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

The month with the highest number of snowfall days is January (10.9 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
Riverton, WV

Average daylight in May / Average sunshine in May - Riverton, 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 months with the most sunshine are June, July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

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Average sunshine days in May
Riverton, WV

Average sunshine days in May - Riverton, WV
  • Average sunshine days in May: 9.9 days

The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is February (9.7 days).

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Average UV index in May
Riverton, WV

Average UV index in May - Riverton, 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, March, November and December (UV index 2).

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Average cloud cover in May
Riverton, WV

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

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in May
Riverton, WV

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

The months with the highest visibility are April and November (6mi).
The month with the lowest visibility is September (4mi).

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Riverton, West Virginia, USA

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