May weather forecast
Lead, SD

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Weather in May

Come May, warmer weather begins to take hold in the city of Lead. Although the mercury doesn't reach July's peak levels, the climb from April's temperatures is noticeable. Accompanied by an abundance of rainfall, reaching about 1.93" (49mm), one of the highest numbers across the year, underlines a transition from spring into early summer. The expanding daylight paired with increasing humidity nods to the arrival of the sunny season. However, nights remain cool enough to offer a refreshing close to the day.

Temperature

A shift in the average high-temperature is noticeable in May, changing from a chilly 49.6°F (9.8°C) in April to a refreshing 60.4°F (15.8°C). May witnesses an average nighttime temperature of 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

January through June, September through December are months with snowfall in Lead. In May, in Lead, it is snowing for 3.6 days. Throughout May, 4.69" (119mm) of snow is accumulated. 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 14h and 49min.
On the first day of May, sunrise is at 5:44 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:31 pm MDT.

Sunshine

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

UV index

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: In May, an average UV index of 4 transforms into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Lead in May?

In May, in Lead, the average high-temperature is 60.4°F (15.8°C), and the average low-temperature is 42.4°F (5.8°C).

What is the average humidity in May in Lead?

The average relative humidity in May is 67%.

What is the rainiest month in Lead?

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

How many days does it rain in May in Lead?

In Lead, South Dakota, in May, it is raining for 13.5 days, with typically 1.93" (49mm) of accumulated precipitation.

How many days does it snow in May in Lead?

In Lead, in May, snow falls for 3.6 days, with typically accumulated 4.69" (119mm) of snow.

How many hours of daylight does Lead have in May?

In May, the average day length in Lead is 14h and 49min.

When is the sunrise / sunset in May in Lead?

On the first day of May in Lead, sunrise is at 5:44 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:31 pm MDT.

How many hours of sunshine does Lead have in May?

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

How high is the UV index in May in Lead?

In Lead, South Dakota, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
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
Lead, SD

Average temperature in May - Lead, SD
  • Average high temperature in May: 60.4°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (29.7°F).

  • Average low temperature in May: 42.4°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (15.4°F).

Average pressure in May
Lead, SD

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in May
Lead, SD

Average wind speed in May - Lead, SD
  • Average wind speed in May: 9.1mph

The windiest month (with the highest average wind speed) is October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).

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%).

Average rainfall in May
Lead, SD

Average rainfall in May - Lead, SD
  • Average rainfall in May: 1.93"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.55").

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).

Average snowfall in May
Lead, SD

Average snowfall in May - Lead, SD
  • Average snowfall in May: 4.69"

The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").

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).

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

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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).

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).

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).

Average visibility in May
Lead, SD

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

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Lead, South Dakota, USA

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