Cincinnati climate

Name: Cincinnati
Address: US

Cincinnati is warmest in July, with average highs of 29 °C, and coldest in January, when nights average -4.2 °C. April is the wettest month (119 mm) and September the driest (68 mm). Figures are 1991–2020 climate normals.

Across a full year Cincinnati averages 1,085 mm of rain, 112 days above 25 °C and 89 days below freezing.

United States · 191 m elevation · population 311,097 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 29 °C
Coldest month January -4.2 °C
Driest month September 68 mm
Wettest month April 119 mm
Least cloud September 46 % cloud
Hottest on record July 39 °C
Coldest on record January -34 °C

What to expectCincinnati through the year

Cincinnati has a clear annual cycle: average daily highs run from 4.0 °C in January to 29 °C in July, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 112 days a year reach 25 °C, 33 of them reach 30 °C, 89 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in July.

Rain is spread fairly evenly through the year, from 68 mm in September to 119 mm in April. There is no dry season to aim for.

Month by month

Month	Avg high	Rainfall	Cloud
January	4.0 °C	84 mm	70 %
February	6.4 °C	76 mm	69 %
March	11.7 °C	103 mm	65 %
April	18.2 °C	119 mm	62 %
May	22.8 °C	118 mm	61 %
June	27.2 °C	108 mm	56 %
July	29.1 °C	88 mm	51 %
August	28.7 °C	76 mm	49 %
September	25.3 °C	68 mm	46 %
October	18.8 °C	74 mm	52 %
November	11.7 °C	82 mm	61 %
December	6.0 °C	90 mm	71 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	4.0 °C	-4.2 °C	-0.7 °C	20.0 °C	-34.2 °C	0	0	24
February	6.4 °C	-3.0 °C	1.0 °C	24.1 °C	-30.7 °C	0	0	20
March	11.7 °C	1.5 °C	5.9 °C	27.8 °C	-16.6 °C	0	0	14
April	18.2 °C	7.2 °C	12.1 °C	28.7 °C	-5.4 °C	2	0	3
May	22.8 °C	12.7 °C	17.5 °C	33.0 °C	-1.0 °C	11	1	0
June	27.2 °C	17.5 °C	22.1 °C	39.1 °C	7.0 °C	22	7	0
July	29.1 °C	19.6 °C	24.2 °C	39.2 °C	12.1 °C	28	12	0
August	28.7 °C	19.0 °C	23.6 °C	36.1 °C	11.2 °C	28	10	0
September	25.3 °C	15.4 °C	20.0 °C	35.6 °C	2.9 °C	16	4	0
October	18.8 °C	9.3 °C	13.5 °C	33.4 °C	-1.7 °C	4	0	0
November	11.7 °C	3.3 °C	6.9 °C	26.5 °C	-17.2 °C	0	0	9
December	6.0 °C	-1.5 °C	1.7 °C	21.5 °C	-25.1 °C	0	0	19

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	84 mm	10	9.7 h/day	70 %	70 %	18 km/h
February	76 mm	9	11 h/day	69 %	68 %	18 km/h
March	103 mm	11	12 h/day	65 %	66 %	18 km/h
April	119 mm	12	13 h/day	62 %	66 %	19 km/h
May	118 mm	13	14 h/day	61 %	72 %	16 km/h
June	108 mm	12	15 h/day	56 %	71 %	14 km/h
July	88 mm	11	15 h/day	51 %	71 %	13 km/h
August	76 mm	9	14 h/day	49 %	70 %	12 km/h
September	68 mm	7	12 h/day	46 %	68 %	14 km/h
October	74 mm	9	11 h/day	52 %	68 %	16 km/h
November	82 mm	9	10 h/day	61 %	70 %	17 km/h
December	90 mm	10	9.4 h/day	71 %	73 %	17 km/h

How Cincinnati compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Cincinnati	29 °C	-4.2 °C	1,085 mm	112
Lexington · United States	30 °C	-2.4 °C	1,209 mm	120
Louisville · United States	31 °C	-2.4 °C	1,170 mm	131
Indianapolis · United States	29 °C	-5.3 °C	1,085 mm	109
Columbus · United States	29 °C	-5.4 °C	1,070 mm	104

Where Cincinnati ranks

Ranking	Position	Value
Places with the best weather in North America in September	24thof 50	90/100

Planning a trip? See the best time to visit Cincinnati.

QuestionsCommon questions about Cincinnati’s climate

When is the best time to visit Cincinnati?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, September sit closest to 20 °C on average, July is the warmest month and September the driest. The month-by-month table above has the full picture.

How hot does Cincinnati get?

In July, the warmest month, daily highs average 29 °C. About 33 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

Nights average -4.2 °C in January, the coldest month. A normal year has 89 nights below freezing.

Which month is wettest in Cincinnati?

April, averaging 119 mm over 12 days with rain. The driest month is September with 68 mm. The year as a whole averages 1,085 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Cincinnati rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.