May weather forecast
Piedmont, SD

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Weather in May

May in Piedmont marks the true arrival of warmer temperatures and late spring weather. Among the distinguishing characteristics is the perceived end of snowfall, along with a relative humidity decrease. A gentle transition from brisk spring to the heat of summer is evident in the city from here. Longer days mean prolonged sunlight, preparing for the longest days in the year following this month.

Temperature

Piedmont's weather in May presents a rise in the average high-temperature, moving from a fresh 53.2°F (11.8°C) in April to a comfortable 63.1°F (17.3°C). Throughout the month of May, Piedmont witnesses an average low-temperature of 45.3°F (7.4°C).

Humidity

The average relative humidity in May is 64%.

Rainfall

The month with the most rainfall in Piedmont is May, when the rain falls for 17.1 days and typically aggregates up to 2.28" (58mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. May is the last month it regularly snows in Piedmont. During 1.3 snowfall days, in May, Piedmont aggregates 1.46" (37mm) of snow. In Piedmont, during the entire year, snow falls for 50.4 days and aggregates up to 24.41" (620mm) of snow.

Daylight

In Piedmont, South Dakota, the average length of the day in May is 14h and 48min.
On the first day of May, sunrise is at 5:43 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:29 pm MDT.

Sunshine

The average sunshine in May in Piedmont is 10.1h.

UV index

In May, the average daily maximum UV index in Piedmont is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In May, the maximum UV index of 5 translates into these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

What is the usual temperature for Piedmont in May?

The high-temperature, in May, in Piedmont, is 63.1°F (17.3°C), while the low-temperature averages to 45.3°F (7.4°C).

What is the average humidity in May in Piedmont?

In May, the average relative humidity in Piedmont is 64%.

What is the wettest month in Piedmont?

May is the month with the most rainfall. Rain falls for 17.1 days and accumulates 2.28" (58mm) of precipitation.

How many days does it rain in May in Piedmont?

In Piedmont, South Dakota, in May, it is raining for 17.1 days, with typically 2.28" (58mm) of accumulated precipitation.

What is the last month it snows in Piedmont?

May is the last month it regularly snows in Piedmont, South Dakota. During 1.3 snowfall days, in May, Piedmont aggregates 1.46" (37mm) of snow.

How many hours of daylight does Piedmont have in May?

The average day length in May is 14h and 48min.

What time are sunrise and sunset in May in Piedmont?

In May, on the first day of the month, sunrise is at 5:43 am and sunset at 7:57 pm. On the last day of the month, in Piedmont, South Dakota, sunrise is at 5:12 am and sunset at 8:29 pm MDT.

How many hours of sunshine does Piedmont have in May?

The average sunshine duration in May in Piedmont is 10.1h.

How high is the UV index in May in Piedmont?

The average daily maximum UV index in May in Piedmont 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
Piedmont, SD

Average temperature in May - Piedmont, SD
  • Average high temperature in May: 63.1°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).

  • Average low temperature in May: 45.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

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Average pressure in May
Piedmont, SD

Average pressure in May - Piedmont, 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).

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Average wind speed in May
Piedmont, SD

Average wind speed in May - Piedmont, SD
  • Average wind speed in May: 9.8mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).

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Average humidity in May
Piedmont, SD

Average humidity in May - Piedmont, SD
  • Average humidity in May: 64%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).

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Average rainfall in May
Piedmont, SD

Average rainfall in May - Piedmont, SD
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in May
Piedmont, SD

Average rainfall days in May - Piedmont, SD
  • Average rainfall days in May: 17.1 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).

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Average snowfall in May
Piedmont, SD

Average snowfall in May - Piedmont, SD
  • Average snowfall in May: 1.46"

The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Piedmont, SD

Average snowfall days in May - Piedmont, SD
  • Average snowfall days in May: 1.3 days

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Piedmont, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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Average sunshine days in May
Piedmont, SD

Average sunshine days in May - Piedmont, SD
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).

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Average UV index in May
Piedmont, SD

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

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

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Average cloud cover in May
Piedmont, SD

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

The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in May
Piedmont, SD

Average visibility in May - Piedmont, 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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Piedmont, South Dakota, USA

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