Marion County (Indianapolis)
August
Weather in Marion County, Indiana for August 2026
Your guide to Marion County weather in August - trends and predictions
Hydrologic Outlook - See hour by hour.
The forecast for the next days in Marion County predicts temperatures to be around 29 °F, close to the historical average.
In general, the average temperature in Marion County at the beginning of August is 27.1 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 29.3 °F by the end of August.
Marion County experiences moderate rainfall in August, with an average of 9 rainy days and a total precipitation of 97.1 mm.
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Official Weather Alert ⚠️
Temperatures
Rain 🌧️
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22
Dry days
9
Rainy days
0
Snow days
28°/18°
Temperatures
15 km/h
Avg max wind
69 %
Avg humidity
Marion County Weather August
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Temperatures trend during August in Marion County
See the weather trend as well as the moving average line
August weather in Marion County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Sunny | 27° /21° | 26.6 mm | 2.3 | |
| Aug. 2 |  Fog | 25° /18° | 1.7 mm | 3.4 | |
| Aug. 3 |  Patchy rain possible | 26° /19° | 0.5 mm | 6.3 | |
| Aug. 4 | Sunny | 28° /17° | 0.1 mm | 7.2 | |
| Aug. 5 | Sunny | 30° /20° | 5 mm | 7 | |
| Aug. 6 | Sunny | 27° /21° | 5.4 mm | 6 | |
| Aug. 7 |  Overcast | 27° /20° | 2.7 mm | 7 | |
| Aug. 8 | Sunny | 29° /20° | 16.6 mm | 7 | |
| Aug. 9 | Patchy rain possible | 29° /21° | 11.7 mm | 7 | |
| Aug. 10 | Sunny | 32° /22° | 9.2 mm | 8 | |
| Aug. 11 | Sunny | 29° /23° | 0 mm | 7 | |
| Aug. 12 | Patchy rain possible | 28° /19° | 7.2 mm | 7 | |
| Aug. 13 | Sunny | 31° /21° | 3 mm | 8 | |
| Aug. 14 |  Thundery outbreaks possible | 32° /23° | 4.3 mm | 8 | |
| Aug. 15 | Patchy rain possible | 26° /18° | 2 mm | 6 | |
| Aug. 16 | Overcast | 30° /18° | 1.3 mm | 7 | |
| Aug. 17 |  Moderate or heavy rain shower | 29° /18° | 6 mm | 7 | |
| Aug. 18 | Overcast | 27° /17° | 0.6 mm | 6 | |
| Aug. 19 | Overcast | 28° /16° | 2.1 mm | 7 | |
| Aug. 20 |  Cloudy | 28° /17° | 0 mm | 6 | |
| Aug. 21 | Patchy rain possible | 27° /17° | 0.1 mm | 6 | |
| Aug. 22 | Overcast | 29° /17° | 0 mm | 7 | |
| Aug. 23 | Overcast | 31° /17° | 1.5 mm | 7 | |
| Aug. 24 | Cloudy | 30° /20° | 0.1 mm | 6 | |
| Aug. 25 | Overcast | 30° /20° | 0.2 mm | 7 | |
| Aug. 26 | Patchy rain possible | 31° /16° | 4.2 mm | 7 | |
| Aug. 27 | Overcast | 29° /16° | 4.2 mm | 6 | |
| Aug. 28 | Mist | 31° /15° | 2.8 mm | 7 | |
| Aug. 29 | Mist | 30° /15° | 0.8 mm | 7 | |
| Aug. 30 | Sunny | 28° /16° | 0.6 mm | 7 | |
| Aug. 31 | Sunny | 26° /14° | 1.4 mm | 6 | |
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Important Notice
Our weather forecast for Marion 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 Marion County forecast closer to your planned date for the most up-to-date weather information.
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Marion County in August - FAQ
What are the expected maximum and minimum temperatures in Marion County during August?
During August, expect a variety of temperatures with highs around 28° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Marion County during August?
Moderate rainfall is anticipated in Marion County during August, with a total of 97.1 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Marion County during August?
The average wind speed in Marion County during August is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Marion County
Explore the daily rainfall trends and prepare for Marion Countys August weather 💧
Typically, Marion County has 9 rainy days in August with a total of 97.1 mm of rainfall.
UV exposure in Marion County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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Where is Marion County?Get accurate weather forecasts for Marion County, located at latitude 39.768 and longitude -86.158. Stay updated with localized weather information tailored for Marion County.
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