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
With the arrival of May, the average high-temperature transitions from a fresh 54.5°F (12.5°C) in April to an enjoyable 66.7°F (19.3°C). Stephan encounters an average low-temperature of 48.2°F (9°C) during May nights.Humidity
In Stephan, the average relative humidity in May is 68%.Rainfall
In Stephan, South Dakota, during May, the rain falls for 13.6 days and regularly aggregates up to 2.09" (53mm) of precipitation. In Stephan, during the entire year, the rain falls for 97.3 days and collects up to 16.73" (425mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Stephan. During 0.2 snowfall days, in May, Stephan aggregates 0.04" (1mm) of snow. In Stephan, during the entire year, snow falls for 47.1 days and aggregates up to 16.06" (408mm) of snow.Daylight
In Stephan, the average length of the day in May is 14h and 48min.On the first day of the month, sunrise is at 6:27 am and sunset at 8:42 pm. On the last day of May, in Stephan, South Dakota, sunrise is at 5:57 am and sunset at 9:14 pm CDT.
Sunshine
In Stephan, the average sunshine in May is 8.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 5 in May transforms into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What is the temperature in May in Stephan?
What is the average humidity in May in Stephan?
How much does it rain in Stephan in May?
What is the last month it snows in Stephan?
How many hours of daylight does Stephan have in May?
What time are sunrise and sunset in May in Stephan?
How long on average sun shines in May in Stephan?
What is the UV index reading in May in Stephan?
Average temperature in May
Stephan, SD
- Average high temperature in May: 66.7°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 (23.4°F).
- Average low temperature in May: 48.2°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in May
Stephan, SD
- Average pressure in May: 29.91"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
Stephan, SD
- Average wind speed in May: 10.2mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in May
Stephan, SD
- Average humidity in May: 68%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (60%).
Average rainfall in May
Stephan, SD
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Stephan, SD
- Average rainfall days in May: 13.6 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in May
Stephan, SD
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Stephan, SD
- Average snowfall days in May: 0.2 days
The months with the highest number of snowfall days are January and February (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Stephan, SD
- Average daylight in May: 14h and 5min
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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Stephan, SD
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in May
Stephan, SD
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in May
Stephan, SD
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in May
Stephan, 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).
Stephan, South Dakota, USA
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