Cincinnati is typically chill in December.

Maximum temperatures go down compared to the previous month from +55°F to +45°F. The minimum temperature also goes down from +39°F to +30°F.

Pack a jumper and a jacket as there will be cooler temperatures.

December is one of the coolest months in Cincinnati, here is the comparison with other months:

December weather is still as ok as in November. It’s getting colder in December. From +55°F in the day, the average maximum temperature lowers to +45°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 82 mm to 80 mm. Humidity rises from 70% to 74%. The average wind speed doesn’t change much during December, staying around 3 m/s. The days becoming less sunny, going from 7 sunny days in November to 4 in December.

January brings much the same weather, it remains ok.

December is one of the snowiest months in Cincinnati.

Here’s how December is compared with other months in the amount of snow, total mm:

The climate in Cincinnati in December has not changed that much over the last 43 years.

The average temperature was the lowest in 1979 (+62°F) and the highest in 2024 (+69°F). The driest year was 1987 with only 684 mm of rainfall, and the wettest year was 2024 with 1749 mm.

For this page, we’ve looked at the typical weather in Cincinnati, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.