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 onset of May brings a rise in the average high-temperature, elevating from a cool 54.1°F (12.3°C) in April to a refreshing 66.6°F (19.2°C). During the month of May, the nighttime temperature falls to an average of 48.2°F (9°C).Humidity
In May, the average relative humidity is 62%.Rainfall
In Mound City, in May, during 13.2 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 89.4 rainfall days, and 15.39" (391mm) 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, Mound City aggregates 0.12" (3mm) of snow. Throughout the year, in Mound City, South Dakota, there are 49.4 snowfall days, and 19.09" (485mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 57min.On the first day of the month, sunrise is at 6:26 am and sunset at 8:48 pm. On the last day of May, in Mound City, sunrise is at 5:54 am and sunset at 9:22 pm CDT.
Sunshine
The average sunshine in May is 9.3h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 during May translates into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. 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
What are May temperatures in Mound City?
What is the average humidity in May in Mound City?
How many days does it rain in May in Mound City?
What is the last month it snows in Mound City?
How many hours of daylight does Mound City have in May?
When is the sunrise / sunset in May in Mound City?
How long on average sun shines in May in Mound City?
How high is the UV index in May in Mound City?
Average temperature in May
Mound City, SD
- Average high temperature in May: 66.6°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).
- Average low temperature in May: 48.2°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in May
Mound City, 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 (29.84"Hg).
Average wind speed in May
Mound City, SD
- Average wind speed in May: 10.8mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).
Average humidity in May
Mound City, SD
- Average humidity in May: 62%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).
Average rainfall in May
Mound City, SD
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in May
Mound City, SD
- Average rainfall days in May: 13.2 days
The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in May
Mound City, SD
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Mound City, 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
Mound City, SD
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Mound City, SD
- Average sunshine days in May: 15.5 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).
Average UV index in May
Mound City, 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 and December (UV index 1).
Average cloud cover in May
Mound City, SD
- Average cloud cover in May: 36
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility in May
Mound City, 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).
Mound City, South Dakota, USA
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