Cincinnati OH Recent September Temperatures, Rainfall

The numbers here describe what the September weather in Cincinnati, Ohio was like for every year since 2010. A series of tables gives September data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many really hot days occurred each September. Then there's information on how much rain actually landed this month during recent years, as well as how often Cincinnati had wet weather.

The climate data come from weather measurements made at Cincinnati/Northern Kentucky International Airport.

Temperature

September temperature averages by year in Cincinnati
High °F	Low °F	Year	High °C	Low °C
81	59	2023	27	15
78	59	2022	25	15
80	60	2021	27	16
78	58	2020	26	14
87	64	2019	31	18
80	63	2018	27	17
78	57	2017	26	14
83	61	2016	28	16
81	59	2015	27	15
78	56	2014	25	14
79	59	2013	26	15
77	56	2012	25	13
74	57	2011	23	14
83	57	2010	28	14

Number of days in September when the temperature in Cincinnati rose to at least 70 or 90 degrees Fahrenheit
Year	70 °F 21 °C	90 °F 32 °C
2023	30	4
2022	25	1
2021	29	0
2020	27	1
2019	30	9
2018	27	8
2017	24	3
2016	27	5
2015	28	7
2014	25	0
2013	27	2
2012	24	1
2011	17	3
2010	28	9

Rain

This table gives the total precipitation that fell on Cincinnati during September in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more.

Total rainfall for September in Cincinnati
Days	Year	Inches	Millimetres
6	2023	0.9	24
11	2022	1.9	49
11	2021	2.7	69
4	2020	1.6	41
2	2019	0.6	15
11	2018	6.8	172
7	2017	2.4	61
10	2016	2.5	63
10	2015	2.0	51
6	2014	3.2	81
9	2013	3.7	93
12	2012	7.2	182
20	2011	7.5	191
5	2010	0.6	14

Cincinnati - Recent September Temperatures and Rainfall

Temperature

Rain

Reference

More on Weather in Cincinnati