Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The start of April is characterized by a subtle increase in the average high-temperature, transitioning from a chilly 48.7°F (9.3°C) in March to a refreshing 55.9°F (13.3°C). Allen experiences an average low-temperature of 37.6°F (3.1°C) in the month of April.Humidity
In April, the average relative humidity is 62%.Rainfall
In Allen, in April, during 12.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, in Allen, South Dakota, there are 86.7 rainfall days, and 13.66" (347mm) of precipitation is accumulated.Snowfall
Months with snowfall in Allen are January through May, September through December. In April, in Allen, it is snowing for 3.5 days. Throughout April, 2.09" (53mm) of snow is accumulated. Throughout the year, in Allen, there are 47.4 snowfall days, and 22.72" (577mm) of snow is accumulated.Daylight
In Allen, South Dakota, the average length of the day in April is 13h and 27min.On the first day of April, sunrise is at 6:27 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 7:48 pm MDT.
Sunshine
The average sunshine in April is 9.1h.UV index
The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What is the temperature in April in Allen?
What is the average humidity in April in Allen?
How many days does it rain in April in Allen?
How much does it snow in Allen in April?
What is the average length of the day in April in Allen?
When are sunrise and sunset in April in Allen?
How long on average sun shines in April in Allen?
What is the UV index reading in April in Allen?
Average temperature in April
Allen, SD
- Average high temperature in April: 55.9°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in April: 37.6°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in April
Allen, SD
- Average pressure in April: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in April
Allen, SD
- Average wind speed in April: 12.2mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (10.2mph).
Average humidity in April
Allen, SD
- Average humidity in April: 62%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (48%).
Average rainfall in April
Allen, SD
- Average rainfall in April: 1.81"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in April
Allen, SD
- Average rainfall days in April: 12.6 days
The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are February and December (2.5 days).
Average snowfall in April
Allen, SD
- Average snowfall in April: 2.09"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Allen, SD
- Average snowfall days in April: 3.5 days
The month with the highest number of snowfall days is February (11.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Allen, 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: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in April
Allen, SD
- Average sunshine days in April: 13.2 days
The month with the most sunshine days is September (22.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in April
Allen, 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 January, February, November and December (UV index 2).
Average cloud cover in April
Allen, SD
- Average cloud cover in April: 40
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in April
Allen, 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).
Allen, South Dakota, USA
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