April weather forecast
Clear Lake, SD

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Weather in April

April in Clear Lake, South Dakota, is a cool spring month, with an average temperature fluctuating between 37°F (2.8°C) and 53.2°F (11.8°C).

Temperature

April's onset is marked by a temperature increase, moving from an icy 39°F (3.9°C) in March to a cool 53.2°F (11.8°C). In Clear Lake, the expected average low-temperature for April is an icy 37°F (2.8°C).

Humidity

In April, the average relative humidity is 68%.

Rainfall

In Clear Lake, in April, it is raining for 11.1 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, in Clear Lake, there are 101.9 rainfall days, and 14.61" (371mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In April, in Clear Lake, it is snowing for 3.3 days. Throughout April, 1.34" (34mm) of snow is accumulated. In Clear Lake, during the entire year, snow falls for 49.9 days and aggregates up to 14.02" (356mm) of snow.

Daylight

The average length of the day in April is 13h and 31min.
On the first day of April, sunrise is at 7:05 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:31 pm CDT.

Sunshine

In Clear Lake, South Dakota, the average sunshine in April is 7.8h.

UV index

In Clear Lake, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index, 3 in April, converts into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. During bright days, sunglasses that offer UVA and UVB defense are recommended. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What is the usual temperature for Clear Lake in April?

In April, in Clear Lake, the average high-temperature is 53.2°F (11.8°C), and the average low-temperature is 37°F (2.8°C).

What is the average humidity in April in Clear Lake?

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

How many days does it rain in April in Clear Lake?

In Clear Lake, during April, the rain falls for 11.1 days and regularly aggregates up to 1.34" (34mm) of precipitation.

How much does it snow in Clear Lake in April?

In Clear Lake, in April, during 3.3 snowfall days, 1.34" (34mm) of snow is typically accumulated.

What is the average length of the day in April in Clear Lake?

In April, the average day length in Clear Lake is 13h and 31min.

When are sunrise and sunset in April in Clear Lake?

On the first day of April in Clear Lake, South Dakota, sunrise is at 7:05 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:31 pm CDT.

How many hours of sunshine does Clear Lake have in April?

In April, the average sunshine duration in Clear Lake, South Dakota, is 7.8h.

How high is the UV index in April in Clear Lake?

The average daily maximum UV index in April in Clear Lake, South Dakota, is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Clear Lake, SD

Average temperature in April - Clear Lake, SD
  • Average high temperature in April: 53.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in April: 37°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).

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Average pressure in April
Clear Lake, SD

Average pressure in April - Clear Lake, SD
  • Average pressure in April: 29.95"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in April
Clear Lake, SD

Average wind speed in April - Clear Lake, SD
  • Average wind speed in April: 10.9mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in April
Clear Lake, SD

Average humidity in April - Clear Lake, SD
  • Average humidity in April: 68%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in April
Clear Lake, SD

Average rainfall in April - Clear Lake, SD
  • Average rainfall in April: 1.34"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in April
Clear Lake, SD

Average rainfall days in April - Clear Lake, SD
  • Average rainfall days in April: 11.1 days

The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).

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Average snowfall in April
Clear Lake, SD

Average snowfall in April - Clear Lake, SD
  • Average snowfall in April: 1.34"

The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Clear Lake, SD

Average snowfall days in April - Clear Lake, SD
  • Average snowfall days in April: 3.3 days

The month with the highest number of snowfall days is January (11.3 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
Clear Lake, SD

Average daylight in April / Average sunshine in April - Clear Lake, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in April
Clear Lake, SD

Average sunshine days in April - Clear Lake, SD
  • Average sunshine days in April: 15.3 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).

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Average UV index in April
Clear Lake, SD

Average UV index in April - Clear Lake, SD
  • Average UV index in April: 3

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and November (UV index 1).

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Average cloud cover in April
Clear Lake, SD

Average cloud cover in April - Clear Lake, SD
  • Average cloud cover in April: 46

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in April
Clear Lake, SD

Average visibility in April - Clear Lake, 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).

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Clear Lake, South Dakota, USA

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