Cincinnati (OH) Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Cincinnati, Ohio, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's now guide you through the details for a complete overview.
Cincinnati has a notably wet climate with abundant precipitation, recording 1201 mm (47 in) of rain/snowfall per year.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Cincinnati experiences moderate seasonal variation in rainfall, with monthly averages ranging from 133 mm (5.2 in) in April, the wettest month, and 70 mm (2.8 in) in August, the driest month.
April, the wettest month, has a maximum daytime temperature of 19°C (66°F). The city receives 212 hours of sunshine in this period. During the driest month August you can expect a temperature of 30°C (86°F). For more detailed insights into the city's temperatures, visit our Cincinnati Temperature page.
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 July
Explore Cincinnati's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Cincinnati spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in the United States of America: City Comparison
The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Cincinnati vs World: Rainfall Compared
Cincinnati's average annual precipitation is 1201 mm (47 in). Let's compare this to some popular worldwide tourist destinations:
In Toronto, Canada, annual precipitation averages 964 mm (38 in), with snowy winters and rainy summers.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.
Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
Precipitation has a very strong role in determining the local climate and ecosystem:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
- Approximately 70% of lightning bolts strike land rather than oceans.
- A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.
For more detailed information about Cincinnati (OH)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Cincinnati (OH) Climate page.
