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
As Mount Vernon transitions into April, the average high-temperature is observed to rise from a frosty 44.4°F (6.9°C) in March to a moderate 56.8°F (13.8°C). Nighttime temperatures consistently average an icy 38.8°F (3.8°C) during April.Humidity
The average relative humidity in April in Mount Vernon, South Dakota, is 67%.Rainfall
In Mount Vernon, in April, it is raining for 11.3 days, with typically 1.18" (30mm) of accumulated precipitation. In Mount Vernon, during the entire year, the rain falls for 93.2 days and collects up to 11.3" (287mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Mount Vernon, South Dakota. April is the last month it regularly snows in Mount Vernon. During 2.6 snowfall days, in April, Mount Vernon aggregates 0.98" (25mm) of snow. In Mount Vernon, during the entire year, snow falls for 35.3 days and aggregates up to 7.17" (182mm) of snow.Daylight
In April, the average length of the day in Mount Vernon is 13h and 28min.On the first day of April in Mount Vernon, sunrise is at 7:12 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 8:34 pm CDT.
Sunshine
In Mount Vernon, the average sunshine in April is 8h.UV index
In Mount Vernon, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In April, a regular UV index of 4 translates into these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What are the temperatures in Mount Vernon in April?
What is the average humidity in April in Mount Vernon?
How many days does it rain in April in Mount Vernon?
What is the last month it snows in Mount Vernon?
What is the average length of the day in April in Mount Vernon?
When are sunrise and sunset in April in Mount Vernon?
How many hours of sunshine does Mount Vernon have in April?
How high is the UV index in April in Mount Vernon?
Average temperature in April
Mount Vernon, SD
- Average high temperature in April: 56.8°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in April: 38.8°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).
Average pressure in April
Mount Vernon, SD
- Average pressure in April: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in April
Mount Vernon, SD
- Average wind speed in April: 11.2mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).
Average humidity in April
Mount Vernon, SD
- Average humidity in April: 67%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are September and October (63%).
Average rainfall in April
Mount Vernon, SD
- Average rainfall in April: 1.18"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February and November (0.28").
Average rainfall days in April
Mount Vernon, SD
- Average rainfall days in April: 11.3 days
The month with the highest number of rainy days is June (13.6 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in April
Mount Vernon, SD
- Average snowfall in April: 0.98"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Mount Vernon, SD
- Average snowfall days in April: 2.6 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Mount Vernon, SD
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 8h and 0min
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 24min).
Average sunshine days in April
Mount Vernon, SD
- Average sunshine days in April: 14.8 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in April
Mount Vernon, 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).
Average cloud cover in April
Mount Vernon, SD
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 22).
Average visibility in April
Mount Vernon, 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).
Mount Vernon, South Dakota, USA
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