May weather forecast
Aberdeen, SD

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During winter, snow cover is seen all over the area in Aberdeen City, South Dakota
During winter, snow cover is seen all over the area in Aberdeen City, South Dakota

Weather in May

May in Aberdeen could be described as the true beginning of spring. It has the highest amount of rainfall volume, at 2.32" (59mm). The temperatures become milder, making outdoor activities more appealing. This growth in warmth and precipitation gives way to lush landscapes. May's showers help nature bloom in full glory, enriching Aberdeen's scenic beauty.

Temperature

The beginning of May in Aberdeen signals a rise in the average high-temperature, moving from a cool 54.1°F (12.3°C) in April to a refreshing 66.7°F (19.3°C). May generally records an average low-temperature of 48.2°F (9°C).

Humidity

In Aberdeen, South Dakota, the average relative humidity in May is 66%.

Rainfall

In Aberdeen, in May, during 13 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 97.2 rainfall days, and 18.35" (466mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Aberdeen aggregates 0.08" (2mm) of snow. Throughout the year, there are 54.8 snowfall days, and 19.13" (486mm) of snow is accumulated.

Daylight

In Aberdeen, the average length of the day in May is 14h and 55min.
On the first day of the month, sunrise is at 6:20 am and sunset at 8:41 pm. On the last day of May, sunrise is at 5:48 am and sunset at 9:14 pm CDT.

Sunshine

In May, the average sunshine is 9h.

UV index

In Aberdeen, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 5 in May translates into this advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

In Aberdeen, 66.7°F (19.3°C) is the average high-temperature and 48.2°F (9°C) is the average low-temperature during May.

What is the average humidity in May?

In May, the average relative humidity is 66%.

How much does it rain in May?

In Aberdeen, during May, the rain falls for 13 days and regularly aggregates up to 2.32" (59mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Aberdeen aggregates 0.08" (2mm) of snow.

What is the average length of the day in May?

In May, the average day length is 14h and 55min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:20 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 9:14 pm CDT.

How many hours of sunshine does Aberdeen have in May?

The average sunshine duration in May is 9h.

How high is the UV index in May?

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health risk 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
Aberdeen, SD

Average temperature in May - Aberdeen, SD
  • Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in May: 48.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

Average pressure in May
Aberdeen, SD

Average pressure in May - Aberdeen, SD
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in May
Aberdeen, SD

Average wind speed in May - Aberdeen, SD
  • Average wind speed in May: 9.7mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in May
Aberdeen, SD

Average humidity in May - Aberdeen, SD
  • Average humidity in May: 66%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).

Average rainfall in May
Aberdeen, SD

Average rainfall in May - Aberdeen, SD
  • Average rainfall in May: 2.32"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in May
Aberdeen, SD

Average rainfall days in May - Aberdeen, SD
  • Average rainfall days in May: 13 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).

Average snowfall in May
Aberdeen, SD

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

The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Aberdeen, SD

Average snowfall days in May - Aberdeen, SD
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in May
Aberdeen, SD

Average sunshine days in May - Aberdeen, SD
  • Average sunshine days in May: 15.7 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).

Average UV index in May
Aberdeen, SD

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).

Average cloud cover in May
Aberdeen, SD

Average cloud cover in May - Aberdeen, SD
  • Average cloud cover in May: 39

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).

Average visibility in May
Aberdeen, SD

Average visibility in May - Aberdeen, 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).

Aberdeen, South Dakota, USA

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