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Average Weather at Dallas/Fort Worth International Airport Texas, United States

At Dallas/Fort Worth International Airport, the temperature typically varies from 37°F to 97°F over the course of the year, and is rarely below 25°F or above 103°F.

The hot season lasts for 107 days, from June 3 to September 18, with an average daily high temperature above 88°F. The hottest day of the year is August 1, with an average high of 97°F and low of 77°F.

The cool season lasts for 92 days, from November 25 to February 25, with an average daily high temperature below 64°F. The coldest day of the year is January 5, with an average low of 37°F and high of 56°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature with percentile bands, 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 entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecchillychillycoldcoldcoolcoolcomfortablecomfortablewarmwarmhothot
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Sun

The length of the day at Dallas/Fort Worth International Airport varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 59 minutes of daylight; the longest day is June 21, with 14 hours, 19 minutes of daylight.

Hours of Daylight and Twilight

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 is at 6:19 AM on June 12, and the latest sunrise is 1 hour, 30 minutes later at 7:48 AM on November 4. The earliest sunset is at 5:21 PM on December 4, and the latest sunset is 3 hours, 19 minutes later at 8:40 PM on June 29.

Daylight saving time (DST) is observed at Dallas/Fort Worth International Airport during 2017, starting in the spring on March 12, lasting 237 days, and ending in the fall on November 5.

Sunrise & Sunset with Twilight and Daylight Saving Time

The solar day over the course of the year 2017. 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 transitions to and from daylight saving time are indicated by the 'DST' labels.

Clouds

At Dallas/Fort Worth International Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year at Dallas/Fort Worth International Airport begins around May 28 and lasts for 170 days, ending around November 14. On October 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 26% of the time.

The cloudier part of the year begins around November 14 and lasts for 195 days, ending around May 28. On February 24, the cloudiest day of the year, the sky is overcast or mostly cloudy 45% of the time, and clear, mostly clear, or partly cloudy 55% of the time.

Cloud Cover

clearerclearercloudiercloudiercloudiercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecFeb 2445%Feb 2445%Oct 526%Oct 526%May 2836%May 2836%Nov 1436%Nov 1436%overcastovercastmostly cloudymostly cloudymostly clearmostly clearclearclear
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Dallas/Fort Worth International Airport varies throughout the year.

The wetter season lasts 196 days, from April 9 to October 22, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 37% on May 27.

The drier season lasts 169 days, from October 22 to April 9. The smallest chance of a wet day is 15% on January 1.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 37% on May 27.

Daily Chance of Precipitation

wetwetdrydrydrydry0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMay 2737%May 2737%Jan 115%Jan 115%Apr 926%Apr 926%Oct 2226%Oct 2226%mixedmixedrainrainsnowsnow
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).

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day in the year. Dallas/Fort Worth International Airport experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Dallas/Fort Worth International Airport. The most rain falls during the 31 days centered around May 20, with an average total accumulation of 4.2 inches.

The least rain falls around August 2, with and average total accumulation of 1.5 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Humidity

We 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.

Dallas/Fort Worth International Airport experiences very significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 159 days, from April 30 to October 6, during which time the comfort level is muggy, oppressive, or miserable at least 20% of the time. The muggiest day of the year is July 3, with muggy conditions 81% of the time.

The least muggy day of the year is January 21, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

muggymuggy0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJan 210%Jan 210%81%Jul 381%Jul 3Apr 3021%Apr 3021%Oct 620%Oct 620%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydrymiserablemiserable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This 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 at Dallas/Fort Worth International Airport experiences mildly seasonal variation over the course of the year.

The windier part of the year lasts for 221 days, from October 26 to June 4, with average wind speeds of more than 5.4 miles per hour. The windiest day of the year is April 2, with an average hourly wind speed of 6.4 miles per hour.

The calmer time of year lasts for 144 days, from June 4 to October 26. The calmest day of the year is August 23, with an average hourly wind speed of 4.4 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Dallas/Fort Worth International Airport varies throughout the year.

The wind is most often from the south for 318 days, from February 8 to December 23, with a peak percentage of 71% on June 27. The wind is most often from the north for 47 days, from December 23 to February 8, with a peak percentage of 39% on January 22.

Wind Direction

NNSS0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecsouthsoutheasteastnorthnorthwestwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

This 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 experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 134 days, from April 11 to August 23, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is July 4, with an average of 7.0 kWh.

The darker period of the year lasts for 89 days, from November 8 to February 5, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 22, with an average of 2.8 kWh.

Average Daily Incident Shortwave Solar Energy

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Dallas/Fort Worth International Airport are 32.896 deg latitude, -97.037 deg longitude, and 551 ft elevation (map ).

The topography within 2 miles of Dallas/Fort Worth International Airport contains only modest variations in elevation, with a maximum elevation change of 148 feet, and an average elevation above sea level of 563 feet. Within 10 miles also contains only modest variations in elevation (351 feet). Within 50 miles contains very significant variations in elevation (1,030 feet).

The area within 2 miles of Dallas/Fort Worth International Airport is covered by artificial surfaces (83%), within 10 miles by artificial surfaces (85%), and within 50 miles by grassland (46%) and cropland (24%).

Data Sources

This report illustrates the typical weather at Dallas/Fort Worth International Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Dallas/Fort Worth International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Dallas Love Field, Dallas United States Naval Air Station, Addison Airport, Grand Prairie Municipal Airport, Arlington Municipal Airport, Dallas Executive Airport, Fort Worth Alliance Airport, and Fort Worth Meacham International Airport.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .