April weather forecast
Armour, SD

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Weather in April

Armour's weather in April witnesses a definitive swing towards spring. Temperatures rise steadily with the average high now 57.7°F (14.3°C) and snowfall shifts to rainfall, marking the end of winter's reign. The tide of nature turns towards new growth, blanketing the entire city in green. A revival of outdoor activities is palpable as residents begin to navigate the blooming cityscape under the lengthened daylight hours.

Temperature

April's arrival signals a temperature shift, moving from a chilly 46.9°F (8.3°C) in March to a mild 57.7°F (14.3°C). During April in Armour, the average low-temperature is recorded at a cold 39.7°F (4.3°C).

Humidity

The average relative humidity in April is 67%.

Rainfall

In Armour, in April, during 10.8 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, in Armour, there are 104.1 rainfall days, and 14.29" (363mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Armour, South Dakota. April is the last month it regularly snows. During 1.8 snowfall days, in April, Armour aggregates 0.75" (19mm) of snow. In Armour, during the entire year, snow falls for 32.8 days and aggregates up to 8.35" (212mm) of snow.

Daylight

In Armour, the average length of the day in April is 13h and 27min.
On the first day of April, sunrise is at 7:13 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:34 pm CDT.

Sunshine

In April, the average sunshine is 8.1h.

UV index

The average daily maximum UV index in April in Armour is 4. A UV Index estimate 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, an average UV index of 4 transforms into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Armour in April?

The high-temperature, in April, in Armour, is 57.7°F (14.3°C), while the low-temperature averages to 39.7°F (4.3°C).

What is the average humidity in April in Armour?

In April, the average relative humidity in Armour, South Dakota, is 67%.

How much does it rain in Armour in April?

In Armour, during April, the rain falls for 10.8 days and regularly aggregates up to 1.42" (36mm) of precipitation.

What is the last month it snows in Armour?

April is the last month it regularly snows. During 1.8 snowfall days, in April, Armour aggregates 0.75" (19mm) of snow.

How many hours of daylight does Armour have in April?

The average day length in April is 13h and 27min.

When is the sunrise / sunset in April in Armour?

In April, on the first day of the month, sunrise is at 7:13 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:34 pm CDT.

How long on average sun shines in April in Armour?

The average sunshine duration in April in Armour, South Dakota, is 8.1h.

What is the UV index intensity in April in Armour?

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from 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
Armour, SD

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

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in April: 39.7°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

Average pressure in April
Armour, SD

Average pressure in April - Armour, 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).

Average wind speed in April
Armour, SD

Average wind speed in April - Armour, 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 (8.3mph).

Average humidity in April
Armour, SD

Average humidity in April - Armour, SD
  • Average humidity in April: 67%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).

Average rainfall in April
Armour, SD

Average rainfall in April - Armour, SD
  • Average rainfall in April: 1.42"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").

Average rainfall days in April
Armour, SD

Average rainfall days in April - Armour, SD
  • Average rainfall days in April: 10.8 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).

Average snowfall in April
Armour, SD

Average snowfall in April - Armour, SD
  • Average snowfall in April: 0.75"

The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in April
Armour, SD

Average snowfall days in April - Armour, SD
  • Average snowfall days in April: 1.8 days

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Armour, SD

Average daylight in April / Average sunshine in April - Armour, SD
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in April: 8h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in April
Armour, SD

Average sunshine days in April - Armour, SD
  • Average sunshine days in April: 15.4 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in April
Armour, SD

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

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

Average cloud cover in April
Armour, SD

Average cloud cover in April - Armour, SD
  • Average cloud cover in April: 42

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).

Average visibility in April
Armour, SD

Average visibility in April - Armour, 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).

Armour, South Dakota, USA

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