May weather forecast
Wall, SD

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Weather in May

The last month of the spring, May, is a pleasant month in Wall, South Dakota, with an average temperature varying between 49.6°F (9.8°C) and 68.2°F (20.1°C).

Temperature

May brings an increase in the average high-temperature, progressing from a moderate 56.5°F (13.6°C) in April to an agreeable 68.2°F (20.1°C). Wall witnesses an average low-temperature of 49.6°F (9.8°C) throughout the month of May.

Humidity

In Wall, the average relative humidity in May is 60%.

Rainfall

May is the month with the most rainfall in Wall. Rain falls for 13.5 days and accumulates 2.09" (53mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Wall. May is the last month it regularly snows in Wall. During 0.6 snowfall days, in May, Wall aggregates 0.75" (19mm) of snow. In Wall, during the entire year, snow falls for 38.8 days and aggregates up to 16.1" (409mm) of snow.

Daylight

In Wall, the average length of the day in May is 14h and 46min.
On the first day of the month, sunrise is at 5:39 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:09 am and sunset at 8:24 pm MDT.

Sunshine

In Wall, the average sunshine in May is 9.8h.

UV index

In Wall, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In May, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What are the temperatures in Wall in May?

During May, Wall experiences an average high-temperature of 68.2°F (20.1°C) and a low-temperature of 49.6°F (9.8°C).

What is the average humidity in May in Wall?

The average relative humidity in May in Wall is 60%.

What is the rainiest month in Wall?

The month with the most rainfall in Wall is May, when the rain falls for 13.5 days and typically aggregates up to 2.09" (53mm) of precipitation.

How much does it rain in Wall in May?

In Wall, South Dakota, during May, the rain falls for 13.5 days and regularly aggregates up to 2.09" (53mm) of precipitation.

What is the last month it snows in Wall?

May is the last month it regularly snows in Wall. During 0.6 snowfall days, in May, Wall aggregates 0.75" (19mm) of snow.

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

In Wall, the average day length in May is 14h and 46min.

What time are sunrise and sunset in May in Wall?

In May, on the first day of the month, sunrise is at 5:39 am and sunset at 7:52 pm. On the last day of the month, in Wall, sunrise is at 5:09 am and sunset at 8:24 pm MDT.

How many hours of sunshine does Wall have in May?

The average sunshine duration in May is 9.8h.

What is the UV index intensity in May in Wall?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Wall, SD

Average temperature in May - Wall, SD
  • Average high temperature in May: 68.2°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in May: 49.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

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Average pressure in May
Wall, SD

Average pressure in May - Wall, SD
  • Average pressure in May: 29.91"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in May
Wall, SD

Average wind speed in May - Wall, SD
  • Average wind speed in May: 11.3mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).

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Average humidity in May
Wall, SD

Average humidity in May - Wall, SD
  • Average humidity in May: 60%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).

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Average rainfall in May
Wall, SD

Average rainfall in May - Wall, SD
  • Average rainfall in May: 2.09"

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in May
Wall, SD

Average rainfall days in May - Wall, SD
  • Average rainfall days in May: 13.5 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in May
Wall, SD

Average snowfall in May - Wall, SD
  • Average snowfall in May: 0.75"

The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Wall, SD

Average snowfall days in May - Wall, SD
  • Average snowfall days in May: 0.6 days

The month with the highest number of snowfall days is February (8.9 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
Wall, SD

Average daylight in May / Average sunshine in May - Wall, SD
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 9h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

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Average sunshine days in May
Wall, SD

Average sunshine days in May - Wall, SD
  • Average sunshine days in May: 15 days

The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).

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Average UV index in May
Wall, SD

Average UV index in May - Wall, SD
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Wall, SD

Average cloud cover in May - Wall, SD
  • Average cloud cover in May: 35

The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).

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Average visibility in May
Wall, SD

Average visibility in May - Wall, SD
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Wall, South Dakota, USA

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