May weather forecastNew Underwood, SD
May
Weather in May
The last month of the spring, May, is a comfortable month in New Underwood, South Dakota, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 63.1°F (17.3°C).Temperature
May's arrival coincides with a rise in the average high-temperature, moving from April's cool 53.2°F (11.8°C) to a refreshing 63.1°F (17.3°C). New Underwood's average low-temperature in May is measured at a chilly 45.3°F (7.4°C).Humidity
In New Underwood, the average relative humidity in May is 64%.Rainfall
May is the month with the most rainfall. Rain falls for 17.1 days and accumulates 2.28" (58mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 1.3 snowfall days, in May, New Underwood aggregates 1.46" (37mm) of snow. Throughout the year, there are 50.4 snowfall days, and 24.41" (620mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 47min.On the first day of May, sunrise is at 5:41 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:11 am and sunset at 8:27 pm MDT.
Sunshine
The average sunshine in May is 10.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 5 in May transforms into this advice:
Act with care - The need to guard against sun damage is communicated. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
New Underwood, SD
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in May: 45.3°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in May
New Underwood, 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
New Underwood, SD
- Average wind speed in May: 9.8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in May
New Underwood, SD
- Average humidity in May: 64%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).
Average rainfall in May
New Underwood, SD
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
New Underwood, SD
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).
Average snowfall in May
New Underwood, SD
- Average snowfall in May: 1.46"
The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
New Underwood, SD
- Average snowfall days in May: 1.3 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
New Underwood, SD
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 24min).
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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in May
New Underwood, SD
- Average sunshine days in May: 11 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).
Average UV index in May
New Underwood, 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
New Underwood, SD
- Average cloud cover in May: 34
The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in May
New Underwood, SD
- 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).
