Summer Weather in Cincinnati Ohio, United StatesDaily high temperatures increase by 4°F, from 78°F to 83°F, rarely falling below 69°F or exceeding 93°F. The highest daily average high temperature is 86°F on July 21. Daily low temperatures increase by 4°F, from 59°F to 63°F, rarely falling below 49°F or exceeding 73°F. The highest daily average low temperature is 67°F on July 22. For reference, on July 20, the hottest day of the year, temperatures in Cincinnati typically range from 67°F to 86°F, while on January 29, the coldest day of the year, they range from 24°F to 39°F. Average High and Low Temperature in the Summer in Cincinnati
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
The figure below shows you a compact characterization of the hourly average summer temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Average Hourly Temperature in the Summer in Cincinnati
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
Chochkan, Armenia (6,042 miles away) is the far-away foreign place with temperatures most similar to Cincinnati (view comparison). CloudsThe summer in Cincinnati experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 50% to 32%. The lowest chance of overcast or mostly cloudy conditions is 32% on August 23. The clearest day of the summer is August 23, with clear, mostly clear, or partly cloudy conditions 68% of the time. For reference, on January 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 61%, while on August 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%. Cloud Cover Categories in the Summer in Cincinnati
0%
clear
20%
mostly clear
40%
partly cloudy
60%
mostly cloudy
80%
overcast
100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
Compare Cincinnati to:PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Cincinnati, the chance of a wet day over the course of the summer is very rapidly decreasing, starting the season at 38% and ending it at 28%. For reference, the year's highest daily chance of a wet day is 40% on May 19, and its lowest chance is 22% on January 29. Probability of Precipitation in the Summer in Cincinnati
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
RainfallTo show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during the summer in Cincinnati is rapidly decreasing, starting the season at 3.8 inches, when it rarely exceeds 6.3 inches or falls below 1.4 inches, and ending the season at 2.5 inches, when it rarely exceeds 4.5 inches or falls below 0.9 inches. Average Monthly Rainfall in the Summer in Cincinnati
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
SunOver the course of the summer in Cincinnati, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 41 minutes, implying an average daily decrease of 1 minute, 6 seconds, and weekly decrease of 7 minutes, 44 seconds. The shortest day of the summer is August 31, with 13 hours, 4 minutes of daylight and the longest day is June 21, with 14 hours, 56 minutes of daylight. Hours of Daylight and Twilight in the Summer in Cincinnati
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
The earliest sunrise of the summer in Cincinnati is 6:11 AM on June 13 and the latest sunrise is 55 minutes later at 7:05 AM on August 31. The latest sunset is 9:08 PM on June 28 and the earliest sunset is 58 minutes earlier at 8:09 PM on August 31. Daylight saving time is observed in Cincinnati during 2026, but it neither starts nor ends during the summer, so the entire season is in daylight saving time. For reference, on June 21, the longest day of the year, the Sun rises at 6:11 AM and sets 14 hours, 56 minutes later, at 9:07 PM, while on December 21, the shortest day of the year, it rises at 7:53 AM and sets 9 hours, 25 minutes later, at 5:18 PM. Sunrise & Sunset with Twilight in the Summer in Cincinnati
The solar day in the summer. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.
The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. Solar Elevation and Azimuth in the Summer in Cincinnati
northeastsouthwest
Solar elevation and azimuth in the the summer of 2026. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).
MoonThe figure below presents a compact representation of key lunar data for the summer of 2026. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. Moon Rise, Set & Phases in the Summer in Cincinnati
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
HumidityWe base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. The chance that a given day will be muggy in Cincinnati is rapidly increasing during the summer, rising from 24% to 42% over the course of the season. The highest chance of a muggy day during the summer is 61% on July 19. For reference, on July 19, the muggiest day of the year, there are muggy conditions 61% of the time, while on November 22, the least muggy day of the year, there are muggy conditions 0% of the time. WindThis section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. The average hourly wind speed in Cincinnati is gradually decreasing during the summer, decreasing from 5.7 miles per hour to 4.9 miles per hour over the course of the season. For reference, on February 25, the windiest day of the year, the daily average wind speed is 8.2 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 4.5 miles per hour. The lowest daily average wind speed during the summer is 4.5 miles per hour on August 1. The wind direction in Cincinnati during the summer is predominantly out of the south from June 1 to June 23 and from August 30 to August 31, the west from June 23 to August 18, and the east from August 18 to August 30. Wind Direction in the Summer in Cincinnati
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).
Growing SeasonDefinitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). The growing season in Cincinnati typically lasts for 6.4 months (196 days), from around April 12 to around October 25, rarely starting before March 26 or after April 29, and rarely ending before October 6 or after November 14. The summer in Cincinnati is reliably fully within the growing season. Time Spent in Various Temperature Bands and the Growing Season in the Summer in Cincinnati
frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F. The average accumulated growing degree days in Cincinnati are very rapidly increasing during the summer, increasing by 2,142°F, from 803°F to 2,945°F, over the course of the season. Solar EnergyThis section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation. The average daily incident shortwave solar energy in Cincinnati is gradually decreasing during the summer, falling by 0.6 kWh, from 6.4 kWh to 5.8 kWh, over the course of the season. The highest average daily incident shortwave solar energy during the summer is 6.7 kWh on July 2. TopographyFor the purposes of this report, the geographical coordinates of Cincinnati are 39.162 deg latitude, -84.457 deg longitude, and 627 ft elevation. The topography within 2 miles of Cincinnati contains only modest variations in elevation, with a maximum elevation change of 282 feet and an average elevation above sea level of 637 feet. Within 10 miles contains only modest variations in elevation (531 feet). Within 50 miles contains significant variations in elevation (820 feet). The area within 2 miles of Cincinnati is covered by artificial surfaces (100%), within 10 miles by artificial surfaces (77%) and trees (20%), and within 50 miles by cropland (51%) and trees (35%). Data SourcesThis report illustrates the typical weather in Cincinnati, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Cincinnati. For each station, the records are corrected for the elevation difference between that station and Cincinnati according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. The estimated value at Cincinnati is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cincinnati and a given station. The stations contributing to this reconstruction are:
 To get a sense of how much these sources agree with each other, you can view a comparison of Cincinnati and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Other DataAll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Time zones for airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page. |
