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 brings a slight increase in the average high-temperature, moving from a chilly 45.5°F (7.5°C) in March to a fresh 53.2°F (11.8°C). April is noted for a mean low-temperature of 35.4°F (1.9°C).Humidity
The average relative humidity in April in Rapid Valley is 66%.Rainfall
In Rapid Valley, in April, it is raining for 13.7 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 118.8 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. April is the month with the most snowfall. Snow falls for 5.3 days and accumulates 5.43" (138mm) of snow.Daylight
In Rapid Valley, the average length of the day in April is 13h and 29min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:20 pm. On the last day of April, in Rapid Valley, sunrise is at 5:44 am and sunset at 7:55 pm MDT.
Sunshine
In April, the average sunshine is 9.4h.UV index
In Rapid Valley, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 3 in April transforms into this advice:
Guard yourself - Precautionary measures against sun damage are advocated. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Rapid Valley?
What is the average humidity in April in Rapid Valley?
How much does it rain in Rapid Valley in April?
When does it snow the most in Rapid Valley?
How many days does it snow in April in Rapid Valley?
What is the average length of the day in April in Rapid Valley?
When is the sunrise / sunset in April in Rapid Valley?
How many hours of sunshine does Rapid Valley have in April?
What is the UV index intensity in April in Rapid Valley?
Average temperature in April
Rapid Valley, SD
- Average high temperature in April: 53.2°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in April: 35.4°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in April
Rapid Valley, SD
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in April
Rapid Valley, SD
- Average wind speed in April: 10.3mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in April
Rapid Valley, SD
- Average humidity in April: 66%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).
Average rainfall in April
Rapid Valley, SD
- Average rainfall in April: 2.24"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in April
Rapid Valley, SD
- Average rainfall days in April: 13.7 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).
Average snowfall in April
Rapid Valley, SD
- Average snowfall in April: 5.43"
The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Rapid Valley, SD
- Average snowfall days in April: 5.3 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Rapid Valley, 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: 8h and 54min).
- Average sunshine in April: 9h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in April
Rapid Valley, SD
- Average sunshine days in April: 11.5 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).
Average UV index in April
Rapid Valley, 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, February, November and December (UV index 2).
Average cloud cover in April
Rapid Valley, SD
- Average cloud cover in April: 38
The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in April
Rapid Valley, 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).
Rapid Valley, South Dakota, USA
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