May weather forecastHarrold, SD
May
Weather in May
The last month of the spring, May, is an agreeable month in Harrold, South Dakota, with temperature in the range of an average high of 68°F (20°C) and an average low of 49.6°F (9.8°C).Temperature
The onset of May marks an increase in the average high-temperature, moving from a moderate 56.1°F (13.4°C) in April to an agreeable 68°F (20°C). During the nights in May, the temperature in Harrold, South Dakota, averages to a chilly 49.6°F (9.8°C).Humidity
The average relative humidity in May is 62%.Rainfall
May is the month with the most rainfall. Rain falls for 13.6 days and accumulates 2.24" (57mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Harrold aggregates 0.08" (2mm) of snow. In Harrold, South Dakota, during the entire year, snow falls for 41.4 days and aggregates up to 13.07" (332mm) of snow.Daylight
In May, the average length of the day is 14h and 50min.On the first day of the month, sunrise is at 6:27 am and sunset at 8:43 pm. On the last day of May, sunrise is at 5:57 am and sunset at 9:16 pm CDT.
Sunshine
In May, the average sunshine is 9.6h.UV index
The average daily maximum UV index in May in Harrold, South Dakota, is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 5 in May transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Harrold, SD
- Average high temperature in May: 68°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in May
Harrold, SD
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Harrold, SD
- Average wind speed in May: 11.1mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are February and August (9.9mph).
Average humidity in May
Harrold, SD
- Average humidity in May: 62%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (52%).
Average rainfall in May
Harrold, SD
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in May
Harrold, SD
- Average rainfall days in May: 13.6 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in May
Harrold, SD
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Harrold, SD
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Harrold, 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: 9h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Harrold, SD
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in May
Harrold, SD
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in May
Harrold, SD
- Average cloud cover in May: 35
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in May
Harrold, 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).
