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
As April gives way to May, the average high-temperature displays an increase, moving from a refreshing 56.5°F (13.6°C) to an agreeable 68.2°F (20.1°C). In the month of May, Interior witnesses a consistent average low-temperature of 49.6°F (9.8°C).Humidity
The average relative humidity in May is 60%.Rainfall
May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 2.09" (53mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Interior. During 0.6 snowfall days, in May, Interior aggregates 0.75" (19mm) of snow. In Interior, during the entire year, snow falls for 38.8 days and aggregates up to 16.1" (409mm) of snow.Daylight
In May, the average length of the day in Interior is 14h and 45min.On the first day of the month, sunrise is at 5:38 am and sunset at 7:51 pm. On the last day of May, sunrise is at 5:09 am and sunset at 8:22 pm MDT.
Sunshine
In May, the average sunshine in Interior is 9.8h.UV index
The average daily maximum UV index in May in Interior, South Dakota, is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. Around midday, solar radiation is most harmful; hence, exposure should be limited. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Interior in May?
What is the average humidity in May in Interior?
What is the rainiest month in Interior?
How much does it rain in Interior in May?
What is the last month it snows in Interior?
What is the average length of the day in May in Interior?
When are sunrise and sunset in May in Interior?
How many hours of sunshine does Interior have in May?
What is the UV index reading in May in Interior?
Average temperature in May
Interior, SD
- Average high temperature in May: 68.2°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in May
Interior, SD
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Interior, SD
- Average wind speed in May: 11.3mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).
Average humidity in May
Interior, SD
- Average humidity in May: 60%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).
Average rainfall in May
Interior, SD
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in May
Interior, SD
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in May
Interior, SD
- Average snowfall in May: 0.75"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Interior, SD
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Interior, 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: 9h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in May
Interior, SD
- Average sunshine days in May: 15 days
The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).
Average UV index in May
Interior, SD
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Interior, SD
- Average cloud cover in May: 35
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in May
Interior, 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).
Interior, South Dakota, USA
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