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 shift into April is characterized by a rise in the average high-temperature, transitioning from March's frosty 44.4°F (6.9°C) to a refreshing 56.8°F (13.8°C). In April, the temperature drops to an average of 38.8°F (3.8°C) at night.Humidity
The average relative humidity in April is 67%.Rainfall
In April, the rain falls for 11.3 days. Throughout April, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 93.2 rainfall days, and 11.3" (287mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 2.6 snowfall days, in April, Letcher aggregates 0.98" (25mm) of snow. Throughout the year, in Letcher, there are 35.3 snowfall days, and 7.17" (182mm) of snow is accumulated.Daylight
In April, the average length of the day in Letcher is 13h and 29min.On the first day of April, sunrise is at 7:12 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:34 pm CDT.
Sunshine
The average sunshine in April is 8h.UV index
The average daily maximum UV index in April in Letcher is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in April converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Letcher in April?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
How many hours of daylight does Letcher have in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Letcher have in April?
What is the UV index intensity in April?
Average temperature in April
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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
Letcher, 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).
Letcher, South Dakota, USA
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