May weather forecastGarretson, SD
May
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in May /
Average sunshine in May
Garretson, SD
- Average daylight in May: 14h and 42min
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 36min
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).
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).
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).
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).
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).
