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Average Weather at Marfa Municipal Airport Texas, United States

At Marfa Municipal Airport, the summers are long and hot; the winters are short, very cold, dry, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 26°F to 89°F and is rarely below 16°F or above 96°F.

Based on the tourism score, the best time of year to visit Marfa Municipal Airport for warm-weather activities is from mid May to mid September.

Climate Summary

coolwarmhotwarmcoolJanFebMarAprMayJunJulAugSepOctNovDecNowNow80%80%60%60%clearovercastprecipitation: 1.7 inprecipitation: 1.7 in0.3 in0.3 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 6.9tourism score: 6.91.41.4
Click on each chart for more information.

Temperature

The hot season lasts for 4.0 months, from May 10 to September 9, with an average daily high temperature above 83°F. The hottest day of the year is June 14, with an average high of 89°F and low of 58°F.

The cold season lasts for 2.8 months, from November 23 to February 16, with an average daily high temperature below 63°F. The coldest day of the year is January 2, with an average low of 26°F and high of 57°F.

Average High and Low Temperature

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 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

Average Hourly Temperature at Marfa Municipal AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMNowNowfreezingvery coldvery coldvery coldvery coldcoldcoldcoolwarmhotcoldcoldfreezingcomfortable
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.

Calingasta, Argentina (4,835 miles away) and Aliwal North, South Africa (9,539 miles) are the far-away foreign places with temperatures most similar to Marfa Municipal Airport (view comparison).

Clouds

At Marfa Municipal Airport, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Marfa Municipal Airport begins around April 21 and lasts for 2.5 months, ending around July 6. On June 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 80% of the time, and overcast or mostly cloudy 20% of the time.

The cloudier part of the year begins around July 6 and lasts for 9.5 months, ending around April 21. On August 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 40% of the time, and clear, mostly clear, or partly cloudy 60% of the time.

Cloud Cover Categories

Cloud Cover Categories at Marfa Municipal AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 980%Jun 980%Aug 1060%Aug 1060%Apr 2170%Apr 2170%Jul 670%Jul 670%NowNowclearovercastmostly clearpartly cloudy
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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Marfa Municipal Airport varies throughout the year.

The wetter season lasts 4.2 months, from May 23 to September 30, with a greater than 18% chance of a given day being a wet day. The chance of a wet day peaks at 31% on July 29.

The drier season lasts 7.8 months, from September 30 to May 23. The smallest chance of a wet day is 5% on February 22.

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 31% on July 29.

Daily Chance of Precipitation

Daily Chance of Precipitation at Marfa Municipal AirportwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 2931%Jul 2931%Feb 225%Feb 225%May 2318%May 2318%Sep 3018%Sep 3018%NowNowrain
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 of the year. Marfa Municipal Airport experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.4 months, from April 25 to November 5, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 5, with an average total accumulation of 1.7 inches.

The rainless period of the year lasts for 5.6 months, from November 5 to April 25. The least rain falls around January 21, with an average total accumulation of 0.3 inches.

Average Monthly Rainfall

Average Monthly Rainfall at Marfa Municipal AirportrainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 inAug 51.7 inAug 51.7 inJan 210.3 inJan 210.3 inApr 250.5 inApr 250.5 inNov 50.5 inNov 50.5 inNowNow
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.

Sun

The length of the day at Marfa Municipal Airport varies significantly over the course of the year. In 2020, the shortest day is December 21, with 10 hours, 11 minutes of daylight; the longest day is June 20, with 14 hours, 7 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Marfa Municipal AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 7 minJun 2014 hr, 7 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 2210 hr, 11 minDec 2110 hr, 11 minDec 21nightnightday
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 6:53 AM on June 10, and the latest sunrise is 1 hour, 20 minutes later at 8:13 AM on March 8. The earliest sunset is at 5:54 PM on December 2, and the latest sunset is 3 hours, 7 minutes later at 9:02 PM on June 30.

Daylight saving time (DST) is observed at Marfa Municipal Airport during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at Marfa Municipal AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMJun 106:53 AMJun 106:53 AM9:02 PMJun 309:02 PMJun 30Dec 25:54 PMDec 25:54 PM8:13 AMMar 88:13 AMMar 8Mar 8DSTMar 8DSTDSTNov 1DSTNov 1daynightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2020. 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.

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.

The perceived humidity level at Marfa Municipal Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Humidity Comfort Levels at Marfa Municipal AirportJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Nov 240%Nov 240%Jul 51%Jul 51%humidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Marfa Municipal Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.1 months, from January 20 to May 24, with average wind speeds of more than 9.5 miles per hour. The windiest day of the year is April 9, with an average hourly wind speed of 11.1 miles per hour.

The calmer time of year lasts for 7.9 months, from May 24 to January 20. The calmest day of the year is August 15, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed

Average Wind Speed at Marfa Municipal AirportwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mph16 mph18 mphApr 911.1 mphApr 911.1 mphAug 157.9 mphAug 157.9 mphJan 209.5 mphJan 209.5 mphNowNow
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 Marfa Municipal Airport varies throughout the year.

The wind is most often from the south for 2.9 months, from May 18 to August 16 and for 2.1 months, from September 6 to November 10, with a peak percentage of 48% on July 7. The wind is most often from the east for 3.0 weeks, from August 16 to September 6, with a peak percentage of 46% on August 23. The wind is most often from the west for 6.3 months, from November 10 to May 18, with a peak percentage of 44% on January 1.

Wind Direction

Wind Direction at Marfa Municipal AirportWSESWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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).

Best Time of Year to Visit

To characterize how pleasant the weather is at Marfa Municipal Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Marfa Municipal Airport for general outdoor tourist activities is from mid May to mid September, with a peak score in the third week of June.

Tourism Score

Tourism Score at Marfa Municipal Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.96.91.41.4NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Marfa Municipal Airport for hot-weather activities is from late May to early August, with a peak score in the third week of June.

Beach/Pool Score

Beach/Pool Score at Marfa Municipal Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468104.94.90.10.1NowNow precipitationprecipitationcloudscloudsbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions 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 at Marfa Municipal Airport typically lasts for 6.4 months (197 days), from around April 14 to around October 28, rarely starting before March 22 or after May 7, and rarely ending before October 9 or after November 16.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Marfa Municipal Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1450%Apr 1450%Oct 2850%Oct 2890%May 790%May 790%Oct 990%Oct 910%Mar 2210%Mar 2210%Nov 1610%Nov 160%Feb 20%Feb 2Jul 22100%Jul 22100%NowNowvery coldcoldcoolcomfortablewarmhot
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.

Based on growing degree days alone, the first spring blooms at Marfa Municipal Airport should appear around February 8, only rarely appearing before January 30 or after February 20.

Growing Degree Days

Growing Degree Days at Marfa Municipal AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F500°F1,000°F1,500°F2,000°F2,500°F3,000°F3,500°F4,000°F4,500°FFeb 890°FFeb 890°FMay 11900°FMay 11900°FJun 231,800°FJun 231,800°FDec 314,450°FDec 314,450°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

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 3.5 months, from April 4 to July 18, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is June 6, with an average of 8.0 kWh.

The darker period of the year lasts for 2.9 months, from November 7 to February 2, with an average daily incident shortwave energy per square meter below 4.5 kWh. The darkest day of the year is December 19, with an average of 3.6 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Marfa Municipal AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWh10 kWhJun 68.0 kWhJun 68.0 kWhDec 193.6 kWhDec 193.6 kWhApr 47.1 kWhApr 47.1 kWhJul 187.1 kWhJul 187.1 kWhFeb 24.5 kWhFeb 24.5 kWhNowNow
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 Marfa Municipal Airport are 30.368 deg latitude, -104.011 deg longitude, and 4,846 ft elevation.

The topography within 2 miles of Marfa Municipal Airport contains only modest variations in elevation, with a maximum elevation change of 171 feet and an average elevation above sea level of 4,823 feet. Within 10 miles contains only modest variations in elevation (2,067 feet). Within 50 miles contains large variations in elevation (5,604 feet).

The area within 2 miles of Marfa Municipal Airport is covered by shrubs (57%) and grassland (43%), within 10 miles by shrubs (77%) and grassland (23%), and within 50 miles by shrubs (88%).

Data Sources

This report illustrates the typical weather at Marfa Municipal 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

Marfa Municipal 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 are Alpine-Casparis Municipal Airport; Pecos Municipal Airport; Fort Stockton, Fort Stockton-Pecos County Airport; Winkler County Airport; Pine Springs, Guadalupe Mountains National Park; and Dryden, Terrel County 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 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 aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The 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.