Normal weather for Rapid City in August
It's warm in August in Rapid City with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 31°C. At night, you can expect temperatures between 12°C and 18°C.
In August, there is an average of 208 mm of precipitation, spread over 18 days. The wind speed is around 5 Bft, mostly coming from the South.
Rapid City in August |
London | ||
---|---|---|---|
Average Temperature |
28°C | 22°C | |
High Temp |
31°C | 24°C | |
Low Temp |
26°C | 19°C | |
Total Precipitation |
208 mm | 60 mm | |
Rainy Days |
18 days | 10 days |
Start of August
The month of August starts in Rapid City with hot temperatures, averaging around 30°C during the day and nights close to 17°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. For the evening and morning, a shirt, maybe a light cardigan, and light trousers will do.
Mid-August
By mid-August, the average daytime temperature drops to around 29°C, with nights close to 15°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
Temperatures vary between day and night, so it’s smart to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. For the evening and morning, a shirt, maybe a light cardigan, and light trousers will do.
End of August
By the end of August, the average daytime temperature in Rapid City will be around 28°C, with nights close to 14°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
As it gets cooler in the evening, it’s best to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. For the evening and morning, a shirt, maybe a light cardigan, and light trousers will do.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit Rapid City?
After some sun? Then August isn’t the best time to be in Rapid City. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Rapid City in August
With 40°C, Rapid City hit the highest temperature in the last 10 years in August 2021. The lowest daytime temperature in this month was 15°C in 2015. The extreme night temperatures ranged from a low of 4°C to a high of 22°C.
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Daily Temperature in August in Rapid City
This chart shows the average daily temperatures, both day and night, for each day in August in Rapid City, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in Rapid City
The chart below shows the average daily precipitation in August for Rapid City, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 18 days of rain in Rapid City.
Daily UV Index in August in Rapid City
This chart shows the average daily UV index in August in Rapid City, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Rapid City Over the Years
This chart shows the average temperature in August in Rapid City, measured in degrees Celsius, over the past years.
Total Precipitation in August in Rapid City Over the Years
This chart shows the average precipitation in August in Rapid City, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for Rapid City
Click on a specific day in August for detailed info on the typical weather on that day in Rapid City. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Rapid City
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Average Weather in Rapid City by Month
Click on a month below to see detailed weather info for Rapid City. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Rapid City for all months at once