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 temperature shift, with the average high-temperature moving from a mild 55.4°F (13°C) in April to a comfortable 67.3°F (19.6°C). Lyons experiences an average low-temperature of 50°F (10°C) in the month of May.Humidity
The average relative humidity in May in Lyons, South Dakota, is 69%.Rainfall
In Lyons, in May, it is raining for 17.1 days, with typically 3.19" (81mm) of accumulated precipitation. In Lyons, South Dakota, during the entire year, the rain falls for 118.3 days and collects up to 22.76" (578mm) of precipitation.Snowfall
Months with snowfall in Lyons are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Lyons aggregates 0.24" (6mm) of snow. In Lyons, South Dakota, during the entire year, snow falls for 45.4 days and aggregates up to 19.33" (491mm) of snow.Daylight
In Lyons, the average length of the day in May is 14h and 45min.On the first day of the month, sunrise is at 6:18 am and sunset at 8:30 pm. On the last day of May, in Lyons, sunrise is at 5:48 am and sunset at 9:02 pm CDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
In Lyons, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Lyons in May?
What is the average humidity in May in Lyons?
How much does it rain in Lyons in May?
What is the last month it snows in Lyons?
How many hours of daylight does Lyons have in May?
What time are sunrise and sunset in May in Lyons?
How long on average sun shines in May in Lyons?
What is the UV index intensity in May in Lyons?
Average temperature in May
Lyons, SD
- Average high temperature in May: 67.3°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in May: 50°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 (9.3°F).
Average pressure in May
Lyons, 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 (29.85"Hg).
Average wind speed in May
Lyons, SD
- Average wind speed in May: 9.9mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in May
Lyons, 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
Lyons, SD
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in May
Lyons, SD
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in May
Lyons, SD
- Average snowfall in May: 0.24"
The month with the highest snowfall is December (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lyons, SD
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lyons, 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
Lyons, SD
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in May
Lyons, 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 and December (UV index 1).
Average cloud cover in May
Lyons, SD
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in May
Lyons, 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).
Lyons, South Dakota, USA
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