This report describes the typical weather at the Lunken/Cincnnati (Cincinnati, Ohio, United States) weather station over the course of an average year. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Cincinnati, Ohio has a humid continental climate with hot summers and no dry season. The area within 25 mi of this station is covered by forests (45%), croplands (39%), and built-up areas (13%).
Over the course of a year, the temperature typically varies from 23°F to 87°F and is rarely below 7°F or above 94°F.
The warm season lasts from May 26 to September 19 with an average daily high temperature above 77°F. The hottest day of the year is July 24, with an average high of 87°F and low of 67°F.
The cold season lasts from November 30 to February 26 with an average daily high temperature below 48°F. The coldest day of the year is January 18, with an average low of 23°F and high of 39°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 9:26 hours of daylight; the longest day is June 20 with 14:55 hours of daylight.
The earliest sunrise is at 6:11am on June 13 and the latest sunset is at 9:08pm on June 27. The latest sunrise is at 8:08am on November 3 and the earliest sunset is at 5:14pm on December 9.
Daylight savings time (DST) is observed in this location during 2012, starting in the spring on March 11 and ending in the fall on November 4.
The median cloud cover ranges from 57% (partly cloudy) to 98% (overcast). The sky is cloudiest on December 31 and clearest on August 15. The clearer part of the year begins around May 2. The cloudier part of the year begins around October 30.
On August 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 53% of the time, and overcast or mostly cloudy 44% of the time.
On December 31, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 75% of the time, and clear or mostly clear 25% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around January 5, occurring in 58% of days. Precipitation is least likely around September 11, occurring in 33% of days.
Over the entire year, the most common forms of precipitation are light rain, thunderstorms, light snow, and moderate rain.
Light rain is the most severe precipitation observed during 36% of those days with precipitation. It is most likely around April 23, when it is observed during 24% of all days.
Thunderstorms are the most severe precipitation observed during 25% of those days with precipitation. They are most likely around July 12, when it is observed during 27% of all days.
Light snow is the most severe precipitation observed during 16% of those days with precipitation. It is most likely around January 15, when it is observed during 26% of all days.
Moderate rain is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around December 1, when it is observed during 8% of all days.
During the warm season, which lasts from May 26 to September 19, there is a 41% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of thunderstorms (54% of days with precipitation have at worst thunderstorms), light rain (31%), and moderate rain (10%).
During the cold season, which lasts from November 30 to February 26, there is a 55% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light snow (40% of days with precipitation have at worst light snow), light rain (29%), moderate rain (11%), and moderate snow (7%).
The likelihood of snow falling is highest around January 17, occurring in 34% of days. The season in which it is relatively likely for snow to fall spans from November 18 to March 27.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 41% (comfortable) to 97% (very humid) over the course of the year, rarely dropping below 25% (dry) and reaching as high as 100% (very humid).
The air is driest around April 16, at which time the relative humidity drops below 50% (comfortable) three days out of four; it is most humid around August 18, exceeding 94% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a year, the dew point typically varies from 15°F (dry) to 71°F (muggy) and is rarely below -2°F (dry) or above 76°F (very muggy).
There are two periods in the year that are most comfortable: The first is between April 20 and June 9 and the second is between September 8 and October 21. The air feels neither too dry nor too muggy during these periods.
Over the course of the year typical wind speeds vary from 0 mph to 16 mph (calm to moderate breeze), rarely exceeding 23 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around April 3, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around September 1, at which time the average daily maximum wind speed is 11 mph (gentle breeze).