Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April brings an increase in the average high-temperature, progressing from an icy 41.4°F (5.2°C) in March to a fresh 54.5°F (12.5°C). Stephan's nights in April cool down to an average low-temperature of 36.9°F (2.7°C).Humidity
The average relative humidity in April is 68%.Rainfall
In Stephan, in April, during 10.8 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 97.3 rainfall days, and 16.73" (425mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Stephan, in April, snow falls for 3.6 days, with typically accumulated 2.09" (53mm) of snow. Throughout the year, there are 47.1 snowfall days, and 16.06" (408mm) of snow is accumulated.Daylight
In Stephan, the average length of the day in April is 13h and 29min.On the first day of April, sunrise is at 7:17 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:40 pm CDT.
Sunshine
The average sunshine in April is 7.5h.UV index
In Stephan, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In April, the average maximum UV index of 3 translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. To guard against the harmful effects of the Sun, minimize exposure during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How many days does it rain in April in Stephan?
How much does it snow in April?
What is the average length of the day in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Stephan, SD
- Average high temperature in April: 54.5°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 April: 36.9°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 April
Stephan, SD
- Average pressure in April: 29.94"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 April
Stephan, SD
- Average wind speed in April: 11.3mph
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 April
Stephan, SD
- Average humidity in April: 68%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (60%).
Average rainfall in April
Stephan, SD
- Average rainfall in April: 1.5"
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 April
Stephan, SD
- Average rainfall days in April: 10.8 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 April
Stephan, SD
- Average snowfall in April: 2.09"
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 April
Stephan, SD
- Average snowfall days in April: 3.6 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 April /
Average sunshine in April
Stephan, SD
- Average daylight in April: 13h and 3min
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 April: 7h and 3min
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 April
Stephan, SD
- Average sunshine days in April: 14.3 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 April
Stephan, SD
- Average UV index in April: 3
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 April
Stephan, SD
- Average cloud cover in April: 46
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 April
Stephan, SD
- Average visibility in April: 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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