Weather for Cincinnati in September is typically good with an average maximum temperature of +26°C during the day, and approximately 9 sunny days monthly. Typically, there are about 12 rainy days with the total average precipitation that falls in September around 77 mm. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+26°C
Avg. max. temperature
+3°C
Min.
+37°C
Max.
77 mm
Total precipitation
72%
Avg. humidity
2 m/s
Avg. wind
9 ☀️
Sunny Days
8 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Cincinnati has good weather in September.
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Average temperature in Cincinnati in September
Here are the expected maximum, average and minimum temperatures in Cincinnati for September based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in September is +27°C with a maximum of +34°C and a minimum of +10°C.
The average maximum temperature goes down 17% by the end of the month, compared with the beginning of the month, from +31°C to +27°C.
Is Cincinnati warm or cold in September?
Cincinnati is typically warm in September.
Maximum temperatures go down compared to the previous month from +30°C to +26°C. The minimum temperature also goes down from +20°C to +15°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Cincinnati:
Climate in Cincinnati in September
Cincinnati weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+30°C
+26°C
+20°C
Min. temperature
+9°C
+3°C
-4°C
Max. temperature
+39°C
+37°C
+35°C
Rainfall
78 mm
77 mm
82 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
72%
72%
71%
Air pressure
1015 HPa
1016 HPa
1017 HPa
Sunny days
7
9
9
Cloudy days
7
8
9
Rainy days
15
12
13
Snowy days
0
0
0
September weather is still as good as in August.It’s getting colder in September. From +30°C in the day, the average maximum temperature lowers to +26°C.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 78 mm to 77 mm.Humidity levels don’t change as the month goes on, averaging around 72%.The average wind speed doesn’t change much during September, staying around 2 m/s.The good news is there are likely to be more sunny days in September, from 7 to 9.
October brings much the same weather, it remains good.
Wind speed in Cincinnati in September based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Cincinnati is gradually decreasing during September, going from 2 m/s to 1 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Cincinnati based on historical data.
Last Year
Historical Data
Total precipitation in September is about 66 mm, with a 37% chance of rain on a typical day. The maximum amount of rainfall per day is around 22 mm, which is considered light rain.September is a pretty wet month with over 11 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Cincinnati wettest month is May, where a typical day has a 55% chance of precipitation and 129 mm of rainfall per day. January, on the other hand, is the driest month with a mere 23% chance of precipitation and 60 mm of rainfall per day.
How was the weather last September in Cincinnati?
This is the weather in Cincinnati in September 2024:
1 September
☀️
+31°C
2 September
☀️
+33°C
3 September
☀️
+33°C
4 September
☀️
+34°C
5 September
☁️
+34°C
6 September
☁️
+31°C
7 September
🌫️
+27°C
8 September
☁️
+26°C
9 September
☁️
+25°C
10 September
☁️
+27°C
11 September
☀️
+29°C
12 September
🌫️
+26°C
13 September
☀️
+25°C
14 September
☀️
+24°C
15 September
☀️
+25°C
16 September
☀️
+26°C
17 September
🌫️
+24°C
18 September
🌫️
+24°C
19 September
☀️
+25°C
20 September
☀️
+28°C
21 September
☀️
+28°C
22 September
☀️
+29°C
23 September
☀️
+26°C
24 September
☀️
+27°C
25 September
☁️
+26°C
26 September
☀️
+28°C
27 September
🌫️
+23°C
28 September
🌧️
+23°C
29 September
🌫️
+25°C
30 September
🌫️
+27°C
In September 2024 Cincinnati had 16 sunny days, 6 cloudy days, and 1 rainy days. The average maximum temperature was +27°C, with an absolute maximum of +34°C and a minimum of +23°C. The average humidity was 71%, with a maximum of 97% and a minimum of 36%. The average wind speed was 2 m/s, with a maximum of 7 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change over Years
This is how Cincinnati climate have been changing during last 43 years period.
The climate in Cincinnati in September has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+17°C) and the highest in 2024 (+20°C). The driest year was 1987 with only 684 mm of rainfall, and the wettest year was 2024 with 1749 mm.
FAQ
Frequently asked questions about the weather in Cincinnati in September:
Is September a good time to visit Cincinnati?
September is a really good time to go to Cincinnati. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Cincinnati.
Can you sunbathe in Cincinnati in September?
September is warm in Cincinnati. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Cincinnati rainy in September?
Cincinnati is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Cincinnati in September?
Usually, it’s not very sunny in Cincinnati in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
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.
