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
The shift into May is characterized by a rise in the average high-temperature, transitioning from April's mild 57.9°F (14.4°C) to an agreeable 69.1°F (20.6°C). An average low-temperature of 50.9°F (10.5°C) is common during the nights of May.Humidity
In May, the average relative humidity in South Yankton is 70%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.9 days and typically aggregates up to 3.78" (96mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, South Yankton aggregates 0.31" (8mm) of snow. Throughout the year, there are 37.4 snowfall days, and 14.45" (367mm) of snow is accumulated.Daylight
In South Yankton, the average length of the day in May is 14h and 40min.On the first day of the month, sunrise is at 6:22 am and sunset at 8:30 pm. On the last day of May, sunrise is at 5:53 am and sunset at 9:01 pm CDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
In South Yankton, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Take precautions - Protection against sunburn is recommended. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the wettest month?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does South Yankton have in May?
How high is the UV index in May?
Average temperature in May
South Yankton, NE
- Average high temperature in May: 69.1°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in May: 50.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in May
South Yankton, NE
- 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 (29.85"Hg).
Average wind speed in May
South Yankton, NE
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in May
South Yankton, NE
- Average humidity in May: 70%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).
Average rainfall in May
South Yankton, NE
- Average rainfall in May: 3.78"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in May
South Yankton, NE
- Average rainfall days in May: 16.9 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in May
South Yankton, NE
- Average snowfall in May: 0.31"
The month with the highest snowfall is December (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
South Yankton, NE
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
South Yankton, NE
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
South Yankton, NE
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in May
South Yankton, NE
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
South Yankton, NE
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in May
South Yankton, NE
- 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).
South Yankton, Nebraska, USA
Weather forecast for your location
2. Allow the app to use your location