April weather forecast
Fort Pierre, SD

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Weather in April

April sets in with mild temperatures and a considerable number of rainy days, marking the full swing of spring in Fort Pierre. Rain falls more frequently in April, peaking with a rainfall average of 1.38" (35mm). A notable weather shift is observed from March as the city experiences increased rain, warmer temperatures, and reduced snowfall. UV index climbs to 3, signaling the approaching summer. Despite these, spring in April remains a charming season with blossoming flora and clear skies.

Temperature

April sees a rise in the average high-temperature, climbing from a frosty 44.1°F (6.7°C) in March to a moderate 56.1°F (13.4°C). During April, Fort Pierre experiences an average low-temperature of 38.5°F (3.6°C) at night.

Humidity

The average relative humidity in April in Fort Pierre is 63%.

Rainfall

In Fort Pierre, South Dakota, in April, during 10.8 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Fort Pierre, during the entire year, the rain falls for 98.5 days and collects up to 13.7" (348mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Fort Pierre, in April, during 3.1 snowfall days, 1.61" (41mm) of snow is typically accumulated. In Fort Pierre, during the entire year, snow falls for 41.4 days and aggregates up to 13.07" (332mm) of snow.

Daylight

The average length of the day in April is 13h and 30min.
On the first day of the month, sunrise is at 6:20 am and sunset at 7:09 pm. On the last day of April, in Fort Pierre, sunrise is at 5:32 am and sunset at 7:44 pm MDT.

Sunshine

The average sunshine in April is 8.1h.

UV index

In Fort Pierre, 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: In April, the UV index of 3 transforms into the following advice:
Take necessary precautions - Defending against sun damage is advocated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the usual temperature for Fort Pierre in April?

April temperatures in Fort Pierre vary between a high-temperature of 56.1°F (13.4°C) and a low-temperature of 38.5°F (3.6°C).

What is the average humidity in April in Fort Pierre?

The average relative humidity in April in Fort Pierre is 63%.

How much does it rain in Fort Pierre in April?

In Fort Pierre, South Dakota, in April, during 10.8 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

How many days does it snow in April in Fort Pierre?

In Fort Pierre, South Dakota, during April, snow falls for 3.1 days and regularly aggregates up to 1.61" (41mm) of snow.

How many hours of daylight does Fort Pierre have in April?

In April, the average day length in Fort Pierre, South Dakota, is 13h and 30min.

What time are sunrise and sunset in April in Fort Pierre?

On the first day of April in Fort Pierre, sunrise is at 6:20 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 7:44 pm MDT.

How long on average sun shines in April in Fort Pierre?

In Fort Pierre, the average sunshine duration in April is 8.1h.

What is the UV index intensity in April in Fort Pierre?

In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Fort Pierre, SD

Average temperature in April - Fort Pierre, SD
  • Average high temperature in April: 56.1°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in April: 38.5°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in April
Fort Pierre, SD

Average pressure in April - Fort Pierre, SD
  • Average pressure in April: 29.94"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in April
Fort Pierre, SD

Average wind speed in April - Fort Pierre, SD
  • Average wind speed in April: 11.9mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are February and August (9.9mph).

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Average humidity in April
Fort Pierre, SD

Average humidity in April - Fort Pierre, SD
  • Average humidity in April: 63%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (52%).

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Average rainfall in April
Fort Pierre, SD

Average rainfall in April - Fort Pierre, SD
  • Average rainfall in April: 1.38"

The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in April
Fort Pierre, SD

Average rainfall days in April - Fort Pierre, SD
  • Average rainfall days in April: 10.8 days

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is February (2.4 days).

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Average snowfall in April
Fort Pierre, SD

Average snowfall in April - Fort Pierre, SD
  • Average snowfall in April: 1.61"

The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Fort Pierre, SD

Average snowfall days in April - Fort Pierre, SD
  • Average snowfall days in April: 3.1 days

The month with the highest number of snowfall days is February (10 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
Fort Pierre, SD

Average daylight in April / Average sunshine in April - Fort Pierre, 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: 8h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in April
Fort Pierre, SD

Average sunshine days in April - Fort Pierre, SD
  • Average sunshine days in April: 14.3 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in April
Fort Pierre, SD

Average UV index in April - Fort Pierre, SD
  • Average UV index in April: 3

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in April
Fort Pierre, SD

Average cloud cover in April - Fort Pierre, SD
  • Average cloud cover in April: 41

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).

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Average visibility in April
Fort Pierre, SD

Average visibility in April - Fort Pierre, 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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Fort Pierre, South Dakota, USA

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