The long-range forecast for Rapid City predicts a heatwave, with temperatures reaching up to 43°, significantly higher than typical for Rapid City for this time of the year and 3.1 °F above the historical average.
Select a month and click on a day for more information
Saturday
Aug 1
33° / 19°
Sunday
Aug 2
36° / 21°
Monday
Aug 3
32° / 20°
Tuesday
Aug 4
32° / 19°
Wednesday
Aug 5
31° / 13°
Thursday
Aug 6
36° / 18°
Friday
Aug 7
38° / 19°
Saturday
Aug 8
38° / 22°
Sunday
Aug 9
41° / 20°
Monday
Aug 10
30° / 16°
Tuesday
Aug 11
22° / 18°
Wednesday
Aug 12
25° / 14°
Thursday
Aug 13
28° / 16°
Friday
Aug 14
29° / 18°
Saturday
Aug 15
36° / 18°
Sunday
Aug 16
43° / 23°
Monday
Aug 17
39° / 25°
Tuesday
Aug 18
38° / 22°
Wednesday
Aug 19
30° / 19°
Thursday
Aug 20
26° / 14°
Friday
Aug 21
33° / 17°
Saturday
Aug 22
32° / 20°
Sunday
Aug 23
31° / 19°
Monday
Aug 24
31° / 20°
Tuesday
Aug 25
28° / 18°
Wednesday
Aug 26
29° / 16°
Thursday
Aug 27
32° / 16°
Friday
Aug 28
30° / 18°
Saturday
Aug 29
27° / 15°
Sunday
Aug 30
30° / 16°
Monday
Aug 31
31° / 17°
Rapid City 30 days weather forecast
Check out our estimated 30 days weather forecast for Rapid City, this data is based on the average weather in Rapid City in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Rapid City next to the desired date.
Weather in Rapid City for the next 30 days
August
Click on a day for an hourly weather forecast
Rapid City long range weather forecast - FAQ
Do you provide 30 days weather forecast for Rapid City?
You can see the next 30 weather forecast for Rapid City at the top of the page, the next 14 days (from today) are more accurate, while the other is based on average of previous years.
Can I see the weather forecast for a particular date in Rapid City?
Sure, you can select the date from the calendar above to view the forecast in Rapid City on that date.
How accurate is the long-range weather forecast for Rapid City?
Our long-range weather forecast for Rapid City is provided by using statistics from previous years. Although we cannot predict the weather months in advance, we can see an average.
Can I see a long-range weather forecast for different countries?
Yes, we provide a 14 day weather forecast and a long-range weather forecast for different countries and cities. You can search for a location in the search box at the top of the page.
More about the weather in Rapid City