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, Rapid City experiences a subtle temperature shift, with 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). The low-temperature averages to a cold 35.4°F (1.9°C) during the nights of April.Humidity
The average relative humidity in April is 66%.Rainfall
In Rapid City, in April, during 13.7 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Rapid City, during the entire year, the rain falls for 118.8 days and collects up to 15.39" (391mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. The month with the most snowfall is April, when snow falls for 5.3 days and typically aggregates up to 5.43" (138mm) of snow.Daylight
In Rapid City, the average length of the day in April is 13h and 29min.On the first day of April in Rapid City, sunrise is at 6:32 am and sunset at 7:20 pm. On the last day of the month, 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 April, the average daily maximum UV index in Rapid City is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 3 during April translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 are April temperatures?
What is the average humidity in April?
How many days does it rain in April in Rapid City?
What is the snowiest month?
How many days does it snow in April?
How many hours of daylight does Rapid City have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Rapid City have in April?
What is the UV index reading in April?
Average temperature in April
Rapid City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, 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 City, South Dakota, USA
Weather forecast for your location
2. Allow the app to use your location