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
With the onset of April, Lyons's weather sees a temperature rise, transitioning from a frosty 42.8°F (6°C) in March to a mild 55.4°F (13°C). April brings with it a nighttime average temperature of 38.5°F (3.6°C).Humidity
In April, the average relative humidity in Lyons, South Dakota, is 69%.Rainfall
In Lyons, in April, during 12.8 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Lyons, South Dakota, during the entire year, the rain falls for 118.3 days and collects up to 22.76" (578mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Lyons, in April, during 2.5 snowfall days, 2.4" (61mm) of snow is typically accumulated. In Lyons, South Dakota, during the entire year, snow falls for 45.4 days and aggregates up to 19.33" (491mm) of snow.Daylight
In April, the average length of the day is 13h and 28min.On the first day of April, sunrise is at 7:07 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:29 pm CDT.
Sunshine
In April, the average sunshine in Lyons is 7.8h.UV index
In Lyons, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In April, the maximum UV index of 3 suggests this advice:
Be vigilant - Preventing sunburn is recommended. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Lyons?
What is the average humidity in April in Lyons?
How much does it rain in Lyons in April?
How many days does it snow in April in Lyons?
How many hours of daylight does Lyons have in April?
What time are sunrise and sunset in April in Lyons?
How many hours of sunshine does Lyons have in April?
How high is the UV index in April in Lyons?
Average temperature in April
Lyons, SD
- Average high temperature in April: 55.4°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in April: 38.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in April
Lyons, 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
Lyons, SD
- Average wind speed in April: 11.4mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in April
Lyons, SD
- Average humidity in April: 69%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall in April
Lyons, SD
- Average rainfall in April: 2.36"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is February (0.63").
Average rainfall days in April
Lyons, SD
- Average rainfall days in April: 12.8 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in April
Lyons, SD
- Average snowfall in April: 2.4"
The month with the highest snowfall is December (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Lyons, SD
- Average snowfall days in April: 2.5 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Lyons, 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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in April
Lyons, SD
- Average sunshine days in April: 13.6 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in April
Lyons, SD
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Lyons, SD
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in April
Lyons, SD
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Lyons, South Dakota, USA
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