April weather forecastVermillion, SD
April
Weather in April
April embodies the true spirit of Spring in Vermillion, as the weather continually warms, coaxing the winter-weary city back to life. There's a significant reduction in snowfall, while rainfall begins to dominate, signaling the onset of the growing season. Temperature fluctuations become more pronounced, swinging between seasonal lows of 40.5°F (4.7°C) and Spring-promising highs. With increased daylight hours and better conditions, outdoor activities begin to beckon residents. After enduring the icy, windswept winter, Vermillion welcomes April's more forgiving weather.Temperature
The shift into April is accompanied by a temperature increase, with the average high-temperature rising from a chilly 46.6°F (8.1°C) in March to a refreshing 57.7°F (14.3°C). In the month of April, the temperature generally rests at an average low of 40.5°F (4.7°C).Humidity
The average relative humidity in April is 68%.Rainfall
In Vermillion, in April, it is raining for 13.1 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 116.6 rainfall days, and 21.26" (540mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Vermillion, South Dakota. In April, it is snowing for 2.1 days. Throughout April, 1.5" (38mm) of snow is accumulated. In Vermillion, South Dakota, during the entire year, snow falls for 30.7 days and aggregates up to 13.9" (353mm) of snow.Daylight
In Vermillion, the average length of the day in April is 13h and 25min.On the first day of the month, sunrise is at 7:08 am and sunset at 7:54 pm. On the last day of April, sunrise is at 6:22 am and sunset at 8:27 pm CDT.
Sunshine
In April, the average sunshine in Vermillion is 8.1h.UV index
In Vermillion, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during April leads to these advisories:
Act with care - The need to guard against sun damage is communicated. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Vermillion, SD
- Average high temperature in April: 57.7°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in April: 40.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in April
Vermillion, 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
Vermillion, 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 (7.8mph).
Average humidity in April
Vermillion, SD
- Average humidity in April: 68%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (65%).
Average rainfall in April
Vermillion, SD
- Average rainfall in April: 2.36"
The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in April
Vermillion, SD
- Average rainfall days in April: 13.1 days
The month with the highest number of rainy days is June (17.3 days).
The months with the least rainy days are January and February (2.8 days).
Average snowfall in April
Vermillion, SD
- Average snowfall in April: 1.5"
The months with the highest snowfall are January and February (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Vermillion, SD
- Average snowfall days in April: 2.1 days
The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Vermillion, SD
- Average daylight in April: 13h and 24min
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 6min).
- Average sunshine in April: 8h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in April
Vermillion, SD
- Average sunshine days in April: 13.7 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in April
Vermillion, 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
Vermillion, SD
- Average cloud cover in April: 43
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in April
Vermillion, 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).
