Cincinnati, OH weather in August
In August, Cincinnati sees highs around 86°F and lows around 64°F: warm and often humid, with some rain. Rain falls on about 10 days. It is one of the warmest months in Cincinnati.
- Normal high
- 86°F
- Normal low
- 64°F
- Wet days
- 10
- 3.4 in total
- Muggy days
- 17
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 87°F | 84°F |
| Normal low | 65°F | 61°F |
| Chance of a wet day | 34% | 30% |
| Sunrise / sunset | 6:38 am / 8:50 pm | 7:06 am / 8:10 pm |
| Daylight | 14.2 h | 13.1 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical August day
- 6 am65°Fdew point 64°F
- 9 am73°Fdew point 66°F
- Noon81°Fdew point 65°F
- 3 pm84°Fdew point 64°F
- 6 pm81°Fdew point 65°F
- 9 pm72°Fdew point 66°F
NOAA hourly normals (local standard time) from Cincinnati Lunken Airport (5 mi away); average wind 4 mph; clear or few clouds in 60% of daytime hours, mostly cloudy or overcast in 27%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F3 of 31
- Hot dayshigh 90°F or more8 of 31
- Muggy daysdaily mean dew point 65°F or more17 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 3.4 in; a dry August brings about 1.9 in and a wet one about 4.2 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202007: average high 94°F
- Coolest August1992: average high 81°F
- Wettest August2018: 10.4 in
- Driest August2012: 1.0 in
- Highest reading102°F (August 23, 2007)
- Lowest reading49°F (August 26, 2017)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 87°F | 86°F | 80°F |
| Normal low | 65°F | 64°F | 56°F |
| Wet days | 12 | 10 | 9 |
| Comfortable days | 2 | 3 | 11 |
| Daylight | 14.6 h | 13.7 h | 12.4 h |
Highs change by -1°F from July and -6°F into September.
Nearby alternatives in August
- Cooler: Fayetteville, WV198 mi · high 80°F · 10 wet days
How Cincinnati ranks in August
- Normal high193rd warmest of 378 cities; 1st of 6 in Ohio
- Wet days226th driest of 378
- Comfortable days166th most of 341
What to pack for Cincinnati in August
- Light, breathable clothing – highs near 86°F and about 17 muggy days
- A rain jacket or umbrella – rain on about 10 days
Heating and cooling
August has 2 heating degree days and 305 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is Cincinnati in August?
The normal high is 86°F and the normal low is 64°F. From 1991 to 2020 the hottest August reading was 102°F (August 23, 2007).
Does it rain a lot in Cincinnati in August?
About 10 days in August have at least 0.01 in of precipitation, and the normal total is 3.4 in. The wettest August in 1991-2020 was in 2018 (10.4 in); the driest was in 2012 (1.0 in).
Is August a good time to visit Cincinnati?
August ranks 7th of 12 months on our comfort score for Cincinnati (50 out of 100). It has about 3 comfortable days and about 8 days at 90°F or hotter. The best months are April, May and October.
Where the numbers come from
- Temperature, rain, frost dates, humidity and wind by hour and cloud cover: Cincinnati Lunken Airport (USW00093812), 5.2 mi E of the city center, 490 ft (62 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Cincinnati Northern Ky Airport (USW00093814), 9.4 mi WSW of the city center, 869 ft (317 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Cina Muni Apt/Lukn Fd Apt (724297-93812), 5.3 mi E of the city center, 475 ft (77 ft lower than the city). Hourly observations, 1991-2020.