May weather forecast and climate
Pierre, SD

The Capitol Dome building in Pierre, South Dakota, set in a beautiful tree park
The Capitol Dome building in Pierre, South Dakota, set in a beautiful tree park

Weather in May

The last month of the spring, May, is a pleasant month in Pierre, South Dakota, with average temperature varying between 49.6°F (9.8°C) and 68°F (20°C).

Temperature

In Pierre, the average high-temperature in May rises, from a mild 56.1°F (13.4°C) in April, to a pleasant 68°F (20°C). In May, the average low-temperature is 49.6°F (9.8°C).

Humidity

In May, the average relative humidity is 62%.

Rainfall

May is the month with the most rainfall in Pierre. Rain falls for 13.6 days and accumulates 2.24" (57mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Pierre. May is the last month it regularly snows in Pierre. During 0.1 snowfall days, Pierre aggregates 0.08" (2mm) of snow. In Pierre, during the entire year, snow falls for 41.4 days, and aggregates up to 13.07" (332mm) of snow.

Daylight

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

Sunshine

In Pierre, the average sunshine is 9.6h.

UV index

The average daily maximum UV index in Pierre is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Pierre?

In May, in Pierre, South Dakota, the average high-temperature is 68°F (20°C), and the average low-temperature is 49.6°F (9.8°C).

What is the average humidity in May in Pierre?

The average relative humidity in May in Pierre, South Dakota, is 62%.

How much does it rain in Pierre in May?

In Pierre, during May, the rain falls for 13.6 days and regularly aggregates up to 2.24" (57mm) of precipitation.

What is the wettest month in Pierre?

May is the month with the most rainfall in Pierre. Rain falls for 13.6 days and accumulates 2.24" (57mm) of precipitation.

What is the last month it snows in Pierre?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Pierre aggregates 0.08" (2mm) of snow.

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

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

How long on average sun shines in May in Pierre?

The average sunshine in May is 9.6h.

What is the UV index intensity in May in Pierre?

In May, the average daily maximum UV index in Pierre, South Dakota, is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in May
Pierre, SD

Average temperature in May - Pierre, SD
  • Average high temperature in May: 68°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in May: 49.6°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in May
Pierre, SD

Average pressure in May - Pierre, SD
  • Average pressure in May: 29.91"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.84").

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Average wind speed in May
Pierre, SD

Average wind speed in May - Pierre, SD
  • Average wind speed in May: 11.1mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are February and August (9.9mph).

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Average humidity in May
Pierre, SD

Average humidity in May - Pierre, SD
  • Average humidity in May: 62%

The month with the highest relative humidity is January (85%).
Months with the lowest relative humidity are August and September (52%).

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Average rainfall in May
Pierre, SD

Average rainfall in May - Pierre, SD
  • Average rainfall in May: 2.24"

The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in May
Pierre, SD

Average rainfall days in May - Pierre, SD
  • Average rainfall days in May: 13.6 days

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is February (2.4 days).

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Average snowfall in May
Pierre, SD

Average snowfall in May - Pierre, SD
  • Average snowfall in May: 0.08"

The month with the highest snowfall is February (3.66").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Pierre, SD

Average snowfall days in May - Pierre, SD
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (10 days).
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
Pierre, SD

Average daylight in May / Average sunshine in May - Pierre, 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: 9.6h

The month with the most sunshine is July (Average sunshine: 11.5h).
The month with the least sunshine is January (Average sunshine: 4.6h).

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Average sunshine days in May
Pierre, SD

Average sunshine days in May - Pierre, SD
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in May
Pierre, SD

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

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

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Average cloud cover in May
Pierre, SD

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

The month with the most cloud cover is January (Cloud cover 50).
Months with the least cloud cover are July and August (Cloud cover 19).

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Average visibility in May
Pierre, SD

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

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

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