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
The shift from April to May brings an increase in the average high-temperature, moving from a cool 54.3°F (12.4°C) to a refreshing 66°F (18.9°C). Isabel experiences an average low-temperature of 47.8°F (8.8°C) in the month of May.Humidity
The average relative humidity in May in Isabel is 61%.Rainfall
The month with the most rainfall is May, when the rain falls for 14.7 days and typically aggregates up to 2.83" (72mm) of precipitation.Snowfall
Months with snowfall in Isabel, South Dakota, are January through May, October through December. May is the last month it regularly snows in Isabel. During 0.9 snowfall days, in May, Isabel aggregates 0.79" (20mm) of snow. In Isabel, during the entire year, snow falls for 58.3 days and aggregates up to 22.95" (583mm) of snow.Daylight
In May, the average length of the day is 14h and 55min.On the first day of May in Isabel, sunrise is at 5:32 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:00 am and sunset at 8:26 pm MDT.
Sunshine
In Isabel, South Dakota, the average sunshine in May is 9.5h.UV index
In May, the average daily maximum UV index in Isabel, South Dakota, is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Take precautions - Protection against sun damage is advised. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are May temperatures in Isabel?
What is the average humidity in May in Isabel?
What is the rainiest month in Isabel?
How many days does it rain in May in Isabel?
What is the last month it snows in Isabel?
How many hours of daylight does Isabel have in May?
What time are sunrise and sunset in May in Isabel?
How many hours of sunshine does Isabel have in May?
What is the UV index intensity in May in Isabel?
Average temperature in May
Isabel, SD
- Average high temperature in May: 66°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in May: 47.8°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in May
Isabel, SD
- Average pressure in May: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Isabel, SD
- Average wind speed in May: 11.6mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).
Average humidity in May
Isabel, SD
- Average humidity in May: 61%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).
Average rainfall in May
Isabel, SD
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in May
Isabel, SD
- Average rainfall days in May: 14.7 days
The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).
Average snowfall in May
Isabel, SD
- Average snowfall in May: 0.79"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Isabel, SD
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Isabel, SD
- Average daylight in May: 14h and 5min
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 3min
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 48min).
Average sunshine days in May
Isabel, SD
- Average sunshine days in May: 13.6 days
The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in May
Isabel, 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 January, February, November and December (UV index 2).
Average cloud cover in May
Isabel, SD
- Average cloud cover in May: 36
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
Isabel, 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).
Isabel, South Dakota, USA
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