May weather forecast
Garretson, SD

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Weather in May

The last month of the spring, May, is a comfortable month in Garretson, South Dakota, with an average temperature varying between 50.4°F (10.2°C) and 67.5°F (19.7°C).

Temperature

In Garretson, the average high-temperature in May increases from a refreshing 55.4°F (13°C) in April to an enjoyable 67.5°F (19.7°C). In Garretson, May nights witness a steady temperature drop to a cool 50.4°F (10.2°C).

Humidity

In Garretson, the average relative humidity in May is 69%.

Rainfall

In Garretson, South Dakota, in May, it is raining for 16.6 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 112.2 rainfall days, and 20.67" (525mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Garretson aggregates 0.16" (4mm) of snow. Throughout the year, there are 42.1 snowfall days, and 18.94" (481mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 45min.
On the first day of the month, sunrise is at 6:16 am and sunset at 8:29 pm. On the last day of May, sunrise is at 5:47 am and sunset at 9:00 pm CDT.

Sunshine

In Garretson, the average sunshine in May is 8.6h.

UV index

In Garretson, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the maximum UV index of 5 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

What is the average May temperature in Garretson?

In Garretson, in May, the average high-temperature is 67.5°F (19.7°C), and the average low-temperature is 50.4°F (10.2°C).

What is the average humidity in May in Garretson?

The average relative humidity in May in Garretson is 69%.

How many days does it rain in May in Garretson?

In Garretson, in May, it is raining for 16.6 days, with typically 2.8" (71mm) of accumulated precipitation.

What is the last month it snows in Garretson?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Garretson aggregates 0.16" (4mm) of snow.

How many hours of daylight does Garretson have in May?

In Garretson, South Dakota, the average day length in May is 14h and 45min.

When is the sunrise / sunset in May in Garretson?

In May, on the first day of the month, sunrise is at 6:16 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 9:00 pm CDT.

How many hours of sunshine does Garretson have in May?

In May, the average sunshine duration in Garretson is 8.6h.

How high is the UV index in May in Garretson?

In May, the average daily maximum UV index in Garretson is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe 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
Garretson, SD

Average temperature in May - Garretson, SD
  • Average high temperature in May: 67.5°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in May: 50.4°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).

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Average pressure in May
Garretson, SD

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

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in May
Garretson, SD

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

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in May
Garretson, SD

Average humidity in May - Garretson, SD
  • Average humidity in May: 69%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in May
Garretson, SD

Average rainfall in May - Garretson, SD
  • Average rainfall in May: 2.8"

The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is November (0.63").

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Average rainfall days in May
Garretson, SD

Average rainfall days in May - Garretson, SD
  • Average rainfall days in May: 16.6 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.2 days).

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Average snowfall in May
Garretson, SD

Average snowfall in May - Garretson, SD
  • Average snowfall in May: 0.16"

The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Garretson, SD

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

The month with the highest number of snowfall days is December (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
Garretson, SD

Average daylight in May / Average sunshine in May - Garretson, SD
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in May
Garretson, SD

Average sunshine days in May - Garretson, SD
  • Average sunshine days in May: 13.1 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is June (10.7 days).

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Average UV index in May
Garretson, SD

Average UV index in May - Garretson, 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, October, November and December (UV index 2).

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Average cloud cover in May
Garretson, SD

Average cloud cover in May - Garretson, SD
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in May
Garretson, SD

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

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