This report describes the typical weather at the Tyler Pounds Regional Airport (Tyler, Texas, 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.
Tyler, Texas has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by croplands (60%), forests (36%), and lakes and rivers (3%).
Over the course of a year, the temperature typically varies from 37°F to 94°F and is rarely below 24°F or above 100°F.
The warm season lasts from May 29 to September 18 with an average daily high temperature above 87°F. The hottest day of the year is August 11, with an average high of 94°F and low of 74°F.
The cold season lasts from November 28 to February 20 with an average daily high temperature below 63°F. The coldest day of the year is January 3, with an average low of 37°F and high of 55°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 10:02 hours of daylight; the longest day is June 20 with 14:17 hours of daylight.
The earliest sunrise is at 6:14am on June 10 and the latest sunset is at 8:33pm on June 30. The latest sunrise is at 7:41am on November 3 and the earliest sunset is at 5:16pm on November 30.
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 23% (mostly clear) to 66% (partly cloudy). The sky is cloudiest on February 27 and clearest on August 8. The clearer part of the year begins around May 31. The cloudier part of the year begins around November 14.
On August 8, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 65% of the time, and overcast or mostly cloudy 21% of the time.
On February 27, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 52% of the time, and clear or mostly clear 36% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around February 15, occurring in 36% of days. Precipitation is least likely around September 5, occurring in 23% of days.
Over the entire year, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 37% of those days with precipitation. They are most likely around May 29, when it is observed during 18% of all days.
Light rain is the most severe precipitation observed during 32% of those days with precipitation. It is most likely around January 7, when it is observed during 14% of all days.
Moderate rain is the most severe precipitation observed during 17% of those days with precipitation. It is most likely around December 29, when it is observed during 8% of all days.
During the warm season, which lasts from May 29 to September 18, there is a 28% 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 (55% of days with precipitation have at worst thunderstorms), light rain (25%), moderate rain (14%), and heavy rain (6%).
During the cold season, which lasts from November 28 to February 20, there is a 35% 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 rain (39% of days with precipitation have at worst light rain), moderate rain (20%), thunderstorms (17%), and drizzle (10%).
The likelihood of snow falling is highest around January 19, occurring in 4% of days.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 42% (comfortable) to 95% (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 August 17, at which time the relative humidity drops below 48% (comfortable) three days out of four; it is most humid around May 8, exceeding 91% (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 29°F (dry) to 74°F (very muggy) and is rarely below 13°F (dry) or above 77°F (oppressive).
There are two periods in the year that are most comfortable: The first is between March 10 and May 9 and the second is between September 24 and November 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 17 mph (calm to moderate breeze), rarely exceeding 23 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around March 27, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 6 mph (light breeze) occurs around August 31, at which time the average daily maximum wind speed is 12 mph (gentle breeze).