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
The beginning of April marks a shift in the average high-temperature, moving from March's frosty 43.2°F (6.2°C) to a fresh 54.3°F (12.4°C). April generally records an average low-temperature of 37.2°F (2.9°C).Humidity
In Isabel, South Dakota, the average relative humidity in April is 63%.Rainfall
In Isabel, during April, the rain falls for 12.3 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Isabel, during the entire year, the rain falls for 99.7 days and collects up to 16.06" (408mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Isabel, in April, snow falls for 5.3 days, with typically accumulated 3.39" (86mm) of snow. Throughout the year, in Isabel, there are 58.3 snowfall days, and 22.95" (583mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 33min.On the first day of April, sunrise is at 6:24 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 7:51 pm MDT.
Sunshine
In Isabel, the average sunshine in April is 8.7h.UV index
The average daily maximum UV index in April in Isabel is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 3 during April, leads to the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How many days does it rain in April in Isabel?
How many days 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
Isabel, SD
- Average high temperature in April: 54.3°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 April: 37.2°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 April
Isabel, SD
- Average pressure in April: 29.94"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 April
Isabel, SD
- Average wind speed in April: 12.2mph
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 April
Isabel, SD
- Average humidity in April: 63%
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 April
Isabel, SD
- Average rainfall in April: 1.81"
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 April
Isabel, SD
- Average rainfall days in April: 12.3 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 April
Isabel, SD
- Average snowfall in April: 3.39"
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 April
Isabel, SD
- Average snowfall days in April: 5.3 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 April /
Average sunshine in April
Isabel, SD
- Average daylight in April: 13h and 4min
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 April: 8h and 4min
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 April
Isabel, SD
- Average sunshine days in April: 12.4 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 April
Isabel, SD
- Average UV index in April: 3
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 April
Isabel, SD
- Average cloud cover in April: 43
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 April
Isabel, SD
- Average visibility in April: 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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