May weather forecastLead, SD
May
Weather in May
Come May, warmer weather begins to take hold in the city of Lead. Although the mercury doesn't reach July's peak levels, the climb from April's temperatures is noticeable. Accompanied by an abundance of rainfall, reaching about 1.93" (49mm), one of the highest numbers across the year, underlines a transition from spring into early summer. The expanding daylight paired with increasing humidity nods to the arrival of the sunny season. However, nights remain cool enough to offer a refreshing close to the day.Temperature
A shift in the average high-temperature is noticeable in May, changing from a chilly 49.6°F (9.8°C) in April to a refreshing 60.4°F (15.8°C). May witnesses an average nighttime temperature of 42.4°F (5.8°C).Humidity
In Lead, the average relative humidity in May is 67%.Rainfall
May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 1.93" (49mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Lead. In May, in Lead, it is snowing for 3.6 days. Throughout May, 4.69" (119mm) of snow is accumulated. In Lead, during the entire year, snow falls for 66.6 days and aggregates up to 34.53" (877mm) of snow.Daylight
In May, the average length of the day is 14h and 49min.On the first day of May, sunrise is at 5:44 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:31 pm MDT.
Sunshine
In Lead, the average sunshine in May is 10.1h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In May, an average UV index of 4 transforms into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lead, SD
- Average high temperature in May: 60.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in May: 42.4°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (15.4°F).
Average pressure in May
Lead, SD
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Lead, SD
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).
Average humidity in May
Lead, SD
- Average humidity in May: 67%
The months with the highest relative humidity are January and February (79%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in May
Lead, SD
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in May
Lead, SD
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is November (2.7 days).
Average snowfall in May
Lead, SD
- Average snowfall in May: 4.69"
The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Lead, SD
- Average snowfall days in May: 3.6 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Lead, SD
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 10h and 6min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in May
Lead, SD
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in May
Lead, SD
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Lead, SD
- Average cloud cover in May: 34
The months with the most cloud cover are February and April (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in May
Lead, 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).
