April weather forecast
Yankton, SD

Weather in April

April is a moderate spring month in Yankton, South Dakota, with an average temperature fluctuating between 57.9°F (14.4°C) and 40.1°F (4.5°C).

Temperature

In April, the average high-temperature rises from a chilly 46.9°F (8.3°C) in March to a mild 57.9°F (14.4°C). In Yankton, in April, the average low-temperature is 40.1°F (4.5°C).

Humidity

In Yankton, the average relative humidity in April is 68%.

Rainfall

In Yankton, it is raining for 12.2 days, with typically 2.4" (61mm) of accumulated precipitation. In Yankton, during the entire year, the rain falls for 117.9 days and collects up to 21.93" (557mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Yankton, during April, snow falls for 2.4 days and regularly aggregates up to 2.13" (54mm) of snow. Throughout the year, there are 37.4 snowfall days, and 14.45" (367mm) of snow is accumulated.

Daylight

In Yankton, the average length of the day in April is 13h and 26min.
On the first day of April in Yankton, sunrise is at 7:11 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:28 pm CDT.

Sunshine

In Yankton, the average sunshine in April is 8h.

UV index

In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 Yankton?

The average high-temperature, in April, in Yankton, South Dakota, is 57.9°F (14.4°C), while the average low-temperature is 40.1°F (4.5°C).

What is the average humidity in April in Yankton?

The average relative humidity in April is 68%.

How many days does it rain in April in Yankton?

In Yankton, South Dakota, in April, it is raining for 12.2 days, with typically 2.4" (61mm) of accumulated precipitation.

How many days does it snow in April in Yankton?

In Yankton, South Dakota, in April, snow falls for 2.4 days, with typically accumulated 2.13" (54mm) of snow.

How many hours of daylight does Yankton have in April?

In Yankton, the average day length in April is 13h and 26min.

When are sunrise and sunset in April in Yankton?

In April, on the first day of the month, sunrise is at 7:11 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:28 pm CDT.

How many hours of sunshine does Yankton have in April?

In April, the average sunshine duration is 8h.

What is the UV index intensity in April in Yankton?

In Yankton, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Yankton, SD

Average temperature in April - Yankton, SD
  • Average high temperature in April: 57.9°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in April: 40.1°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

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Average pressure in April
Yankton, SD

Average pressure in April - Yankton, SD
  • Average pressure in April: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in April
Yankton, SD

Average wind speed in April - Yankton, SD
  • Average wind speed in April: 11.1mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).

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Average humidity in April
Yankton, SD

Average humidity in April - Yankton, SD
  • Average humidity in April: 68%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).

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Average rainfall in April
Yankton, SD

Average rainfall in April - Yankton, SD
  • Average rainfall in April: 2.4"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").

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Average rainfall days in April
Yankton, SD

Average rainfall days in April - Yankton, SD
  • Average rainfall days in April: 12.2 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in April
Yankton, SD

Average snowfall in April - Yankton, SD
  • Average snowfall in April: 2.13"

The month with the highest snowfall is December (2.95").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Yankton, SD

Average snowfall days in April - Yankton, SD
  • Average snowfall days in April: 2.4 days

The month with the highest number of snowfall days is January (9.7 days).
The 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
Yankton, SD

Average daylight in April / Average sunshine in April - Yankton, SD
  • Average daylight in April: 13h and 26min

The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 5min).

  • Average sunshine in April: 8h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in April
Yankton, SD

Average sunshine days in April - Yankton, SD
  • Average sunshine days in April: 14.8 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in April
Yankton, SD

Average UV index in April - Yankton, SD
  • Average UV index in April: 4

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in April
Yankton, SD

Average cloud cover in April - Yankton, SD
  • Average cloud cover in April: 43

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in April
Yankton, SD

Average visibility in April - Yankton, 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).

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