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 Letcher enters April, the average high-temperature increases from the a chilly 44.4°F (6.9°C) of March to a moderate 56.8°F (13.8°C). In the month of April, the nighttime temperature in Letcher dips to a steady average of 38.8°F (3.8°C).Humidity
In Letcher, the average relative humidity in April is 67%.Rainfall
In Letcher, during April, the rain falls for 11.3 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Letcher, during the entire year, the rain falls for 93.2 days and collects up to 11.3" (287mm) of precipitation.Snowfall
Months with snowfall in Letcher 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 Letcher, the average length of the day in April is 13h and 29min.On the first day of April in Letcher, 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 in Letcher, South Dakota, is 8h.UV index
In Letcher, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 during April translates into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What are the temperatures in Letcher in April?
What is the average humidity in April in Letcher?
How many days does it rain in April in Letcher?
What is the last month it snows in Letcher?
How many hours of daylight does Letcher have in April?
When are sunrise and sunset in April in Letcher?
How many hours of sunshine does Letcher have in April?
What is the UV index intensity in April in Letcher?
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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