This report describes the typical weather at the Shawnee Regional Airport (Shawnee, Oklahoma, United States) weather station over the course of an average year. It is based on the historical records from 2001 to 2012. Earlier records are either unavailable or unreliable.
Shawnee, Oklahoma has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by grasslands (98%).
Over the course of a year, the temperature typically varies from 29°F to 94°F and is rarely below 18°F or above 101°F.
The warm season lasts from May 31 to September 11 with an average daily high temperature above 85°F. The hottest day of the year is July 26, with an average high of 94°F and low of 74°F.
The cold season lasts from November 25 to February 26 with an average daily high temperature below 59°F. The coldest day of the year is January 14, with an average low of 29°F and high of 51°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 9:45 hours of daylight; the longest day is June 20 with 14:32 hours of daylight.
The earliest sunrise is at 6:12am on June 12 and the latest sunset is at 8:47pm on June 28. The latest sunrise is at 7:52am on November 3 and the earliest sunset is at 5:14pm on December 6.
Daylight saving 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 5% (clear) to 30% (mostly clear). The sky is cloudiest on April 14 and clearest on August 7. The clearer part of the year begins around June 7. The cloudier part of the year begins around February 17.
On August 7, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 84% of the time, and overcast or mostly cloudy 13% of the time.
On April 14, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 42% of the time, and clear or mostly clear 49% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around May 17, occurring in 41% of days. Precipitation is least likely around December 31, occurring in 22% of days.
Over the entire year, the most common forms of precipitation are thunderstorms, moderate rain, and light rain.
Thunderstorms are the most severe precipitation observed during 56% of those days with precipitation. They are most likely around May 22, when it is observed during 30% of all days.
Moderate rain is the most severe precipitation observed during 15% of those days with precipitation. It is most likely around November 2, when it is observed during 8% of all days.
Light rain is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around May 3, when it is observed during 6% of all days.
During the warm season, which lasts from May 31 to September 11, there is a 32% 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 (79% of days with precipitation have at worst thunderstorms), light rain (9%), and moderate rain (7%).
During the cold season, which lasts from November 25 to February 26, there is a 25% 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 (25% of days with precipitation have at worst thunderstorms), moderate rain (23%), light snow (21%), and moderate snow (11%).
The likelihood of snow falling is highest around January 27, occurring in 10% of days. The season in which it is relatively likely for snow to fall spans from November 22 to March 16.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 40% (comfortable) to 92% (very humid) over the course of the year, rarely dropping below 21% (dry) and reaching as high as 100% (very humid).
The air is driest around March 6, at which time the relative humidity drops below 49% (comfortable) three days out of four; it is most humid around June 7, exceeding 88% (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 21°F (dry) to 72°F (very muggy) and is rarely below 10°F (dry) or above 77°F (oppressive).
There are two periods in the year that are most comfortable: The first is between April 2 and May 25 and the second is between September 18 and November 6. 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 20 mph (calm to fresh breeze), rarely exceeding 27 mph (strong breeze).
The highest average wind speed of 12 mph (gentle breeze) occurs around March 27, at which time the average daily maximum wind speed is 20 mph (fresh breeze).
The lowest average wind speed of 7 mph (light breeze) occurs around September 5, at which time the average daily maximum wind speed is 13 mph (moderate breeze).