Cincinnati Weather in August
August in Cincinnati brings very high temperatures, with daytime highs of 30°C (86°F) and nights around 18°C (64°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.
Rainfall in Cincinnati in August
With the lowest rainfall figures of the year, conditions are ideal for exploring the outdoors. Typically around 9 days of rainfall are expected, averaging 70 mm (2.8 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Cincinnati in August
If you're visiting Cincinnati in August, expect highs of 30°C (86°F) and overnight lows around 18°C (64°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. Remember, these are typical temperatures, and there can be hotter days. Dress appropriately and stay hydrated to remain comfortable.
Sunshine in Cincinnati in August
With approximately 236 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.Our weather planner can help you find worldwide destinations with pleasant weather during this period. September and October typically offer the best weather for Cincinnati.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Cincinnati's climate page.
Cincinnati Temperature in August
Min Temperature
18°C (64°F)
Max Temperature
30°C (86°F)
Chance of Rain
30%
Precipitation
70 mm (2.8 in)
Rainy days
9 days
Humidity
72%
Sunshine
236 hours
Percentage Sunshine
62%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cincinnati typically stay consistent throughout August, with daily highs averaging around 30°C (86°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 19°C (66°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Cincinnati in August
Browse day-by-day weather records for Cincinnati spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cincinnati historical weather extremes in August
Based on weather observations in Cincinnati between 1976 and 2025, these are the recorded extremes during August.
- On August 17, 1988, temperatures climbed to 39°C (102°F), marking the warmest August day on record.
- The coldest August day was on August 28, 1986, with a maximum of 19°C (66°F).
- Nighttime temperatures dropped to 6°C (43°F) on August 29, 1986, marking the coldest August night on record.
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
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What to Wear in Cincinnati in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Cincinnati in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Cincinnati's climate page.
Temperature Rainfall Sunshine Humidity
See the full Cincinnati climate overview or explore weather in the United States of America.
