Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Sioux Falls, South Dakota, sees an increase in average high-temperatures during May, moving from a moderate 55.4°F (13°C) in April to a still refreshing 67.5°F (19.7°C). During May, the temperature in Sioux Falls is averaged to a low of 50.4°F (10.2°C) at night.Humidity
In May, the average relative humidity in Sioux Falls is 69%.Rainfall
In Sioux Falls, in May, during 16.6 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, in Sioux Falls, there are 117.1 rainfall days, and 20.71" (526mm) 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, Sioux Falls aggregates 0.24" (6mm) of snow. In Sioux Falls, during the entire year, snow falls for 48.7 days and aggregates up to 18.23" (463mm) of snow.Daylight
In May, the average length of the day is 14h and 44min.On the first day of the month, sunrise is at 6:18 am and sunset at 8:29 pm. On the last day of May, sunrise is at 5:48 am and sunset at 9:00 pm CDT.
Sunshine
The average sunshine in May is 8.7h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What is the average May temperature in Sioux Falls?
What is the average humidity in May in Sioux Falls?
How much does it rain in Sioux Falls in May?
What is the last month it snows in Sioux Falls?
What is the average length of the day in May in Sioux Falls?
When is the sunrise / sunset in May in Sioux Falls?
How long on average sun shines in May in Sioux Falls?
What is the UV index reading in May in Sioux Falls?
Average temperature in May
Sioux Falls, SD
- Average high temperature in May: 67.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in May: 50.4°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 (9.7°F).
Average pressure in May
Sioux Falls, SD
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Sioux Falls, SD
- Average wind speed in May: 9.8mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in May
Sioux Falls, 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 (66%).
Average rainfall in May
Sioux Falls, SD
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is June (3.27").
The driest months (with the least rainfall) are January, February and November (0.67").
Average rainfall days in May
Sioux Falls, SD
- Average rainfall days in May: 16.6 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).
Average snowfall in May
Sioux Falls, SD
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sioux Falls, SD
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sioux Falls, 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).
Average sunshine days in May
Sioux Falls, SD
- Average sunshine days in May: 12.4 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in May
Sioux Falls, 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, November and December (UV index 2).
Average cloud cover in May
Sioux Falls, 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
Sioux Falls, 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).
Sioux Falls, South Dakota, USA
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