April weather forecast
Vermillion, SD

Weather in April

April is a mild spring month in Vermillion, South Dakota, with an average temperature fluctuating between 57.7°F (14.3°C) and 40.5°F (4.7°C).

Temperature

In Vermillion, the average high-temperature in April rises from a chilly 46.6°F (8.1°C) in March to a moderate 57.7°F (14.3°C). In Vermillion, the average low-temperature is 40.5°F (4.7°C).

Humidity

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

Rainfall

In April, in Vermillion, the rain falls for 13.1 days. Throughout April, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 116.6 rainfall days, and 21.26" (540mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Vermillion, snow falls for 2.1 days, with typically accumulated 1.5" (38mm) of snow. In Vermillion, South Dakota, during the entire year, snow falls for 30.7 days and aggregates up to 13.9" (353mm) of snow.

Daylight

In Vermillion, the average length of the day in April is 13h and 25min.
On the first day of April in Vermillion, sunrise is at 7:09 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 8:27 pm CDT.

Sunshine

In April, the average sunshine in Vermillion, South Dakota, is 8.1h.

UV index

In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 4 in April transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Vermillion?

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

How many days does it rain in April in Vermillion?

In April, in Vermillion, the rain falls for 13.1 days. Throughout April, 2.36" (60mm) of precipitation is accumulated.

How much does it snow in Vermillion in April?

In Vermillion, in April, during 2.1 snowfall days, 1.5" (38mm) of snow is typically accumulated.

What is the average length of the day in April in Vermillion?

In April, the average day length in Vermillion, South Dakota, is 13h and 25min.

What time are sunrise and sunset in April in Vermillion?

On the first day of April in Vermillion, sunrise is at 7:09 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 8:27 pm CDT.

How many hours of sunshine does Vermillion have in April?

In Vermillion, South Dakota, the average sunshine duration in April is 8.1h.

What is the UV index intensity in April in Vermillion?

The average daily maximum UV index in April in Vermillion, South Dakota, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.

Average temperature in April
Vermillion, SD

Average temperature in April - Vermillion, SD
  • Average high temperature in April: 57.7°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in April: 40.5°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
Vermillion, SD

Average pressure in April - Vermillion, 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
Vermillion, SD

Average wind speed in April - Vermillion, 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 (7.8mph).

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Average humidity in April
Vermillion, SD

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

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (65%).

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Average rainfall in April
Vermillion, SD

Average rainfall in April - Vermillion, SD
  • Average rainfall in April: 2.36"

The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January and February (0.63").

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Average rainfall days in April
Vermillion, SD

Average rainfall days in April - Vermillion, SD
  • Average rainfall days in April: 13.1 days

The month with the highest number of rainy days is June (17.3 days).
The months with the least rainy days are January and February (2.8 days).

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Average snowfall in April
Vermillion, SD

Average snowfall in April - Vermillion, SD
  • Average snowfall in April: 1.5"

The months with the highest snowfall are January and February (2.83").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Vermillion, SD

Average snowfall days in April - Vermillion, SD
  • Average snowfall days in April: 2.1 days

The month with the highest number of snowfall days is February (7.1 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
Vermillion, SD

Average daylight in April / Average sunshine in April - Vermillion, SD
  • Average daylight in April: 13h and 25min

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: 8.1h

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is January (Average sunshine: 4.5h).

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Average sunshine days in April
Vermillion, SD

Average sunshine days in April - Vermillion, SD
  • Average sunshine days in April: 13.7 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in April
Vermillion, SD

Average UV index in April - Vermillion, 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
Vermillion, SD

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

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in April
Vermillion, SD

Average visibility in April - Vermillion, 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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