May weather forecast
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

May, the last month of the spring in Pierre, is a pleasant month, with an average temperature ranging between min 49.6°F (9.8°C) and max 68°F (20°C).

Temperature

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

Humidity

In May, the average relative humidity in Pierre is 62%.

Rainfall

The month with the most rainfall in Pierre, South Dakota, is May, when the rain falls for 13.6 days and typically aggregates up to 2.24" (57mm) of precipitation.

Snowfall

Months with snowfall in Pierre are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Pierre aggregates 0.08" (2mm) of snow. Throughout the year, in Pierre, there are 41.4 snowfall days, and 13.07" (332mm) of snow is accumulated.

Daylight

In Pierre, South Dakota, the average length of the day in May is 14h and 49min.
On the first day of the month, sunrise is at 6:31 am and sunset at 8:45 pm. On the last day of May, sunrise is at 6:00 am and sunset at 9:17 pm CDT.

Sunshine

The average sunshine in May in Pierre, South Dakota, is 9.6h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Pierre?

In Pierre, in May, 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?

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

What is the wettest month in Pierre?

The month with the most rainfall in Pierre, South Dakota, is May, when the rain falls for 13.6 days and typically aggregates up to 2.24" (57mm) of precipitation.

How many days does it rain in May in Pierre?

In Pierre, South Dakota, in May, during 13.6 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

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?

The average day length in May in Pierre, South Dakota, is 14h and 49min.

When is the sunrise / sunset in May in Pierre?

On the first day of May in Pierre, South Dakota, sunrise is at 6:31 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 9:17 pm CDT.

How many hours of sunshine does Pierre have in May?

In Pierre, the average sunshine duration in May is 9.6h.

What is the UV index reading in May in Pierre?

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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%).
The 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").
The 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).
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
Pierre, SD

Average daylight in May / Average sunshine in May - Pierre, SD
  • Average daylight in May: 14h and 49min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • Average sunshine in May: 9h and 36min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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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).
The 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).
The 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

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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