April weather forecast and climate
Sioux Falls, SD

The Sioux Falls in South Dakota, flowing downstream over rocks under the perfect evening skyline
The Sioux Falls in South Dakota, flowing downstream over rocks under the perfect evening skyline

Weather in April

April is a moderate spring month in Sioux Falls, South Dakota, with average temperature ranging between max 55.4°F (13°C) and min 38.5°F (3.6°C).

Temperature

In Sioux Falls, the average high-temperature in April increases, from a chilly 43.2°F (6.2°C) in March, to a moderate 55.4°F (13°C). In Sioux Falls, in April, the average low-temperature is 38.5°F (3.6°C).

Humidity

The average relative humidity in April is 69%.

Rainfall

In April, in Sioux Falls, the rain falls for 12.5 days. Throughout April, 2.13" (54mm) of precipitation is accumulated. Throughout the year, in Sioux Falls, there are 117.1 rainfall days, and 20.71" (526mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sioux Falls are January through May, October through December. In Sioux Falls, snow falls for 2.8 days, with typically accumulated 2.09" (53mm) of snow. Throughout the year, in Sioux Falls, there are 48.7 snowfall days, and 18.23" (463mm) of snow is accumulated.

Daylight

The average length of the day is 13.5h.

Sunshine

In April, the average sunshine in Sioux Falls is 8h.

UV index

In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in April in Sioux Falls?

The average high-temperature, in April, is 55.4°F (13°C), while the average low-temperature is 38.5°F (3.6°C).

What is the average humidity in April in Sioux Falls?

The average relative humidity in April in Sioux Falls, South Dakota, is 69%.

How many days does it rain in April in Sioux Falls?

In Sioux Falls, South Dakota, in April, during 12.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

How many days does it snow in April in Sioux Falls?

In Sioux Falls, in April, during 2.8 snowfall days, 2.09" (53mm) of snow is typically accumulated.

How many hours of daylight does Sioux Falls have in April?

In April, the average length of the day in Sioux Falls, South Dakota, is 13.5h.

How long on average sun shines in April in Sioux Falls?

The average sunshine in April in Sioux Falls, South Dakota, is 8h.

What is the UV index intensity in April in Sioux Falls?

The average daily maximum UV index in April in Sioux Falls is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in April
Sioux Falls, SD

Average temperature in April - Sioux Falls, SD
  • Average high temperature in April: 55.4°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in April: 38.5°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in April
Sioux Falls, SD

Average pressure in April - Sioux Falls, SD
  • Average pressure in April: 29.93"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in April
Sioux Falls, SD

Average wind speed in April - Sioux Falls, 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 July (8mph).

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Average humidity in April
Sioux Falls, SD

Average humidity in April - Sioux Falls, SD
  • Average humidity in April: 69%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (66%).

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Average rainfall in April
Sioux Falls, SD

Average rainfall in April - Sioux Falls, SD
  • Average rainfall in April: 2.13"

The wettest month (with the highest rainfall) is June (3.27").
The driest months (with the least rainfall) are January, February and November (0.67").

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Average rainfall days in April
Sioux Falls, SD

Average rainfall days in April - Sioux Falls, SD
  • Average rainfall days in April: 12.5 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).

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Average snowfall in April
Sioux Falls, SD

Average snowfall in April - Sioux Falls, SD
  • Average snowfall in April: 2.09"

The month with the highest snowfall is February (4.25").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Sioux Falls, SD

Average snowfall days in April - Sioux Falls, SD
  • Average snowfall days in April: 2.8 days

The month with the highest number of snowfall days is January (11.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Sioux Falls, SD

Average daylight in April / Average sunshine in April - Sioux Falls, SD
  • Average daylight in April: 13.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in April: 8h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 4h).

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Average sunshine days in April
Sioux Falls, SD

Average sunshine days in April - Sioux Falls, SD
  • Average sunshine days in April: 13 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (10 days).

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Average UV index in April
Sioux Falls, SD

Average UV index in April - Sioux Falls, SD
  • Average UV index in April: 3

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Sioux Falls, SD

Average cloud cover in April - Sioux Falls, SD
  • Average cloud cover in April: 45

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in April
Sioux Falls, SD

Average visibility in April - Sioux Falls, SD
  • Average visibility in April: 6mi

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).

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