Pennington County (Rapid City)
August
Weather in Pennington County, South Dakota for August 2026
Your guide to Pennington County weather in August - trends and predictions
In general, the average temperature in Pennington County at the beginning of August is 31.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.4 °F by the end of August.
With an average of 4 rainy days, Pennington County experiences minimal rainfall in August.
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Temperatures
Rain 🌧️
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27
Dry days
4
Rainy days
0
Snow days
30°/17°
Temperatures
24 km/h
Avg max wind
44 %
Avg humidity
Pennington County Weather August
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Temperatures trend during August in Pennington County
See the weather trend as well as the moving average line
August weather in Pennington County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Sunny | 29° /17° | 0 mm | 7 | |
| Aug. 2 | Sunny | 34° /19° | 0 mm | 8 | |
| Aug. 3 |  Cloudy | 31° /21° | 0 mm | 7 | |
| Aug. 4 | Cloudy | 34° /20° | 0 mm | 8 | |
| Aug. 5 |  Overcast | 29° /16° | 1.2 mm | 7 | |
| Aug. 6 |  Patchy rain possible | 31° /18° | 2 mm | 7 | |
| Aug. 7 |  Moderate or heavy rain shower | 32° /19° | 2.7 mm | 7 | |
| Aug. 8 |  Partly cloudy | 25° /16° | 0.2 mm | 6 | |
| Aug. 9 | Partly cloudy | 26° /14° | 0 mm | 7 | |
| Aug. 10 | Overcast | 26° /14° | 0 mm | 7 | |
| Aug. 11 | Patchy rain possible | 27° /16° | 1.8 mm | 7 | |
| Aug. 12 | Cloudy | 27° /14° | 0.2 mm | 7 | |
| Aug. 13 | Overcast | 33° /19° | 3.7 mm | 7 | |
| Aug. 14 | Patchy rain possible | 32° /19° | 0.9 mm | 7 | |
| Aug. 15 | Cloudy | 29° /18° | 14.4 mm | 7 | |
| Aug. 16 | Patchy rain possible | 29° /19° | 6.5 mm | 7 | |
| Aug. 17 | Sunny | 30° /17° | 1.9 mm | 8 | |
| Aug. 18 | Moderate rain at times | 31° /20° | 2 mm | 7 | |
| Aug. 19 | Patchy rain possible | 33° /19° | 0.2 mm | 8 | |
| Aug. 20 | Sunny | 32° /18° | 0 mm | 8 | |
| Aug. 21 | Partly cloudy | 34° /21° | 0 mm | 8 | |
| Aug. 22 | Sunny | 28° /20° | 1.7 mm | 7 | |
| Aug. 23 | Sunny | 27° /16° | 0 mm | 7 | |
| Aug. 24 | Partly cloudy | 29° /18° | 0 mm | 7 | |
| Aug. 25 | Cloudy | 27° /18° | 0 mm | 7 | |
| Aug. 26 | Moderate or heavy rain shower | 26° /15° | 5.3 mm | 6 | |
| Aug. 27 | Sunny | 26° /14° | 0 mm | 7 | |
| Aug. 28 | Sunny | 28° /16° | 8.4 mm | 7 | |
| Aug. 29 | Sunny | 24° /15° | 1.5 mm | 6 | |
| Aug. 30 | Sunny | 25° /14° | 9.7 mm | 6 | |
| Aug. 31 | Sunny | 29° /16° | 0.5 mm | 8 | |
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Important Notice
Our weather forecast for Pennington County 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 Pennington County forecast closer to your planned date for the most up-to-date weather information.
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Pennington County in August - FAQ
What are the expected maximum and minimum temperatures in Pennington County 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 Pennington County during August?
In August, Pennington County can expect light to moderate rainfall, totaling 22.9 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Pennington County during August?
The average wind speed in Pennington County during August is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Pennington County
Explore the daily rainfall trends and prepare for Pennington Countys August weather 💧
UV exposure in Pennington County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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Where is Pennington County?Get accurate weather forecasts for Pennington County, located at latitude 44.081 and longitude -103.231. Stay updated with localized weather information tailored for Pennington County.
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