May weather forecast
Lead, SD

Weather in May

The last month of the spring, May, is a mild month in Lead, South Dakota, with average temperature fluctuating between 42.4°F (5.8°C) and 60.4°F (15.8°C).

Temperature

In Lead, the average high-temperature rises, from a frosty 49.6°F (9.8°C) in April, to a mild 60.4°F (15.8°C). The average low-temperature, in May, is 42.4°F (5.8°C).

Humidity

In Lead, the average relative humidity in May is 67%.

Rainfall

May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 1.93" (49mm) of precipitation.

Snowfall

Months with snowfall in Lead are January through June, September through December. In Lead, snow falls for 3.6 days, with typically accumulated 4.69" (119mm) of snow. In Lead, during the entire year, snow falls for 66.6 days, and aggregates up to 34.53" (877mm) of snow.

Daylight

In May, the average length of the day is 14.8h.

Sunshine

In Lead, the average sunshine in May is 10.1h.

UV index

In May, the average daily maximum UV index in Lead is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 4 in May transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in Lead?

The average relative humidity in May in Lead is 67%.

What is the wettest month in Lead?

May is the month with the most rainfall in Lead. Rain falls for 13.5 days and accumulates 1.93" (49mm) of precipitation.

How much does it rain in Lead in May?

In May, in Lead, South Dakota, the rain falls for 13.5 days. Throughout May, 1.93" (49mm) of precipitation is accumulated.

How many days does it snow in May in Lead?

In Lead, South Dakota, in May, during 3.6 snowfall days, 4.69" (119mm) of snow is typically accumulated.

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

The average length of the day in May is 14.8h.

How many hours of sunshine does Lead have in May?

In Lead, the average sunshine in May is 10.1h.

What is the UV index reading in May in Lead?

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in May
Lead, SD

Average temperature in May - Lead, SD
  • Average high temperature in May: 15.8°C

The warmest month (with the highest average high temperature) is July (27.7°C).
The month with the lowest average high temperature is December (-1.3°C).

  • Average low temperature in May: 5.8°C

The month with the highest average low temperature is July (15.8°C).
The coldest month (with the lowest average low temperature) is February (-9.2°C).

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Average pressure in May
Lead, SD

Average pressure in May - Lead, SD
  • Average pressure in May: 1012.8mbar

The month with the highest atmospheric pressure is January (1020.5mbar).
The month with the lowest atmospheric pressure is June (1010.6mbar).

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Average wind speed in May
Lead, SD

Average wind speed in May - Lead, SD
  • Average wind speed in May: 14.6km/h

The windiest month (with the highest average wind speed) is October (16km/h).
The calmest month (with the lowest average wind speed) is August (12.3km/h).

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Average humidity in May
Lead, SD

Average humidity in May - Lead, SD
  • Average humidity in May: 67%

The months with the highest relative humidity are January and February (79%).
The months with the lowest relative humidity are August and September (51%).

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Average rainfall in May
Lead, SD

Average rainfall in May - Lead, SD
  • Average rainfall in May: 49mm

The wettest month (with the highest rainfall) is May (49mm).
The driest month (with the least rainfall) is January (14mm).

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Average rainfall days in May
Lead, SD

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

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is November (2.7 days).

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Average snowfall in May
Lead, SD

Average snowfall in May - Lead, SD
  • Average snowfall in May: 119mm

The month with the highest snowfall is April (166mm).
The months with the least snowfall are July and August (0mm).

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Average snowfall days in May
Lead, SD

Average snowfall days in May - Lead, SD
  • Average snowfall days in May: 3.6 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in May /
Average sunshine in May
Lead, SD

Average daylight in May / Average sunshine in May - Lead, SD
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in May: 10.1h

The month with the most sunshine is August (Average sunshine: 11.7h).
The month with the least sunshine is February (Average sunshine: 5.9h).

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Average sunshine days in May
Lead, SD

Average sunshine days in May - Lead, SD
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index in May
Lead, SD

Average UV index in May - Lead, SD
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in May
Lead, SD

Average cloud cover in May - Lead, SD
  • Average cloud cover in May: 34

The months with the most cloud cover are February and April (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in May
Lead, SD

Average visibility in May - Lead, SD
  • Average visibility in May: 9km

The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).

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