May weather forecastTolstoy, SD
May
Weather in May
May, the last month of the spring in Tolstoy, is a comfortable month, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 66.2°F (19°C).Temperature
The arrival of May signals an increase in the average high-temperature, moving from a cool 54°F (12.2°C) in April to a refreshing 66.2°F (19°C). Tolstoy observes an average nighttime low-temperature of 47.8°F (8.8°C) during the month of May.Humidity
In Tolstoy, the average relative humidity in May is 64%.Rainfall
In Tolstoy, during May, the rain falls for 13.7 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Tolstoy, during the entire year, the rain falls for 97.8 days and collects up to 16.65" (423mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Tolstoy. May is the last month it regularly snows in Tolstoy. During 0.3 snowfall days, in May, Tolstoy aggregates 0.31" (8mm) of snow. Throughout the year, in Tolstoy, there are 59.7 snowfall days, and 19.96" (507mm) of snow is accumulated.Daylight
In Tolstoy, the average length of the day in May is 14h and 54min.On the first day of May in Tolstoy, sunrise is at 6:25 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 9:18 pm CDT.
Sunshine
In Tolstoy, the average sunshine in May is 9.1h.UV index
In Tolstoy, South Dakota, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 5 during May translates into the following guidance:
Heed the precautions - It is counselled to guard against solar damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Tolstoy, SD
- Average high temperature in May: 66.2°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in May: 47.8°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in May
Tolstoy, 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
Tolstoy, SD
- Average wind speed in May: 11mph
The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).
Average humidity in May
Tolstoy, SD
- Average humidity in May: 64%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (56%).
Average rainfall in May
Tolstoy, SD
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in May
Tolstoy, SD
- Average rainfall days in May: 13.7 days
The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in May
Tolstoy, SD
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Tolstoy, SD
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Tolstoy, SD
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 9h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Tolstoy, SD
- Average sunshine days in May: 14.6 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in May
Tolstoy, 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, February, November and December (UV index 1).
Average cloud cover in May
Tolstoy, SD
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in May
Tolstoy, 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).
