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United States weather

Weather in Rapid City, South Dakota for August 2027

Your guide to Rapid City weather in August - trends and predictions

    Temperatures

  • In general, the average temperature in Rapid City at the beginning of August is 31.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 28.2 °C by the end of August.

    • Rain 🌧️

  • Rapid City experiences moderate rainfall in August, with an average of 9 rainy days and a total precipitation of 78.2 mm.

    • More

  • Is August a good time to visit Rapid City? check out the best time to travel to Rapid City page.

  • ✨ Is August a good time to visit Rapid City? – Ask the AI Weatherman

Average dry days
22
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/17°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
50 %
Avg humidity

Rapid City Weather August

Move between months or click on a day
July
September
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
31°
2
Sunny
36°
3
Cloudy
30°
4
Cloudy
31°
5
Overcast
30°
6
Patchy rain possible
32°
7
Patchy rain possible
32°
8
Partly cloudy
29°
9
Partly cloudy
28°
10
Overcast
29°
11
Patchy rain possible
29°
12
Light rain
28°
13
Light rain
29°
14
Light rain
31°
15
Moderate rain
28°
16
Light rain
26°
17
Patchy rain possible
30°
18
Patchy rain possible
30°
19
Light rain
32°
20
Sunny
33°
21
Partly cloudy
34°
22
Patchy rain possible
28°
23
Moderate rain
28°
24
Partly cloudy
30°
25
Cloudy
28°
26
Light rain
27°
27
Sunny
28°
28
Light rain
30°
29
Patchy rain possible
27°
30
Light rain
28°
31
Sunny
29°

Temperatures trend during August in Rapid City

See the weather trend as well as the moving average line

August weather in Rapid City day by day

Click on a date for more information
July September
Date Weather Temperatures Rain UV More
Aug. 1 Sunny
Sunny
 31° /17° 0 mm 8
Aug. 2 Sunny
Sunny
 36° /21° 0 mm 9
Aug. 3 Cloudy
Cloudy
 30° /19° 0 mm 8
Aug. 4 Cloudy
Cloudy
 31° /17° 0 mm 9
Aug. 5 Overcast
Overcast
 30° /15° 0.8 mm 8
Aug. 6 Patchy rain possible
Patchy rain possible
 32° /17° 1.3 mm 8
Aug. 7 Patchy rain possible
Patchy rain possible
 32° /18° 1.8 mm 8
Aug. 8 Partly cloudy
Partly cloudy
 29° /16° 0.1 mm 7
Aug. 9 Partly cloudy
Partly cloudy
 28° /15° 0 mm 8
Aug. 10 Overcast
Overcast
 29° /15° 0.1 mm 8
Aug. 11 Patchy rain possible
Patchy rain possible
 29° /17° 1.8 mm 8
Aug. 12 Light rain
Light rain
 28° /15° 3.6 mm 8
Aug. 13 Light rain
Light rain
 29° /18° 5.4 mm 6
Aug. 14 Light rain
Light rain
 31° /19° 6.3 mm 7
Aug. 15 Moderate rain
Moderate rain
 28° /18° 11.7 mm 6
Aug. 16 Light rain
Light rain
 26° /17° 6 mm 6
Aug. 17 Patchy rain possible
Patchy rain possible
 30° /17° 1.7 mm 8
Aug. 18 Patchy rain possible
Patchy rain possible
 30° /19° 1.4 mm 6
Aug. 19 Light rain
Light rain
 32° /18° 6.6 mm 8
Aug. 20 Sunny
Sunny
 33° /18° 0 mm 8.4
Aug. 21 Partly cloudy
Partly cloudy
 34° /20° 0 mm 8
Aug. 22 Patchy rain possible
Patchy rain possible
 28° /19° 1.1 mm 6
Aug. 23 Moderate rain
Moderate rain
 28° /17° 11.3 mm 6
Aug. 24 Partly cloudy
Partly cloudy
 30° /18° 0 mm 8
Aug. 25 Cloudy
Cloudy
 28° /18° 0 mm 7
Aug. 26 Light rain
Light rain
 27° /15° 3.5 mm 7
Aug. 27 Sunny
Sunny
 28° /15° 0 mm 7
Aug. 28 Light rain
Light rain
 30° /17° 5.7 mm 5
Aug. 29 Patchy rain possible
Patchy rain possible
 27° /17° 1.1 mm 6
Aug. 30 Light rain
Light rain
 28° /16° 6.5 mm 6
Aug. 31 Sunny
Sunny
 29° /15° 0.3 mm 7.5
Next
Important Notice
Our weather forecast for Rapid City in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rapid City forecast closer to your planned date for the most up-to-date weather information.
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Rapid City in August - FAQ

What are the expected maximum and minimum temperatures in Rapid City during August?
Expect warm days with temperatures around 30°, cooling to mild conditions of 17° after sunset. Perfect for those who enjoy warm weather.

How much rainfall should be expected in Rapid City during August?
Moderate rainfall is anticipated in Rapid City during August, with a total of 78.2 mm spread over approximately 9 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Rapid City during August?
The average wind speed in Rapid City during August is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

August rainfall patterns in Rapid City

Explore the daily rainfall trends and prepare for Rapid Citys August weather 💧
Typically, Rapid City has 9 rainy days in August with a total of 78.2 mm of rainfall.

UV exposure in Rapid City during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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Location coordinates Where is Rapid City?

Get accurate weather forecasts for Rapid City, located at latitude 44.081 and longitude -103.231. Stay updated with localized weather information tailored for Rapid City.

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