Fall Weather in Matamoros Mexico

Daily high temperatures decrease by 13°F, from 81°F to 69°F, rarely falling below 60°F or exceeding 88°F.

Daily low temperatures decrease by 19°F, from 60°F to 40°F, rarely falling below 32°F or exceeding 63°F.

For reference, on June 5, the hottest day of the year, temperatures in Matamoros typically range from 61°F to 91°F, while on January 22, the coldest day of the year, they range from 37°F to 66°F.

The figure below shows you a compact characterization of the hourly average fall temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Kimberley, Northern Cape, South Africa (9,430 miles away) and Singleton, New South Wales, Australia (7,921 miles) are the far-away foreign places with temperatures most similar to Matamoros (view comparison).

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The fall in Matamoros experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 57% to 38%. The lowest chance of overcast or mostly cloudy conditions is 31% on October 24.

The clearest day of the fall is October 24, with clear, mostly clear, or partly cloudy conditions 69% of the time.

For reference, on August 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 59%, while on June 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Matamoros, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 40% and ending it at 6%.

For reference, the year's highest daily chance of a wet day is 47% on August 2, and its lowest chance is 2% on April 3.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the fall in Matamoros is very rapidly decreasing, starting the season at 3.1 inches, when it rarely exceeds 6.6 inches or falls below 0.7 inches, and ending the season at 0.4 inches, when it rarely exceeds 1.2 inches or falls below -0.0 inches.

Over the course of the fall in Matamoros, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 2 hours, 4 minutes, implying an average daily decrease of 1 minute, 23 seconds, and weekly decrease of 9 minutes, 41 seconds.

The shortest day of the fall is November 30, with 10 hours, 35 minutes of daylight and the longest day is September 1, with 12 hours, 40 minutes of daylight.

The earliest sunrise of the fall in Matamoros is 6:42 AM on September 1 and the latest sunrise is 51 minutes later at 7:33 AM on November 30.

The latest sunset is 7:21 PM on September 1 and the earliest sunset is 1 hour, 13 minutes earlier at 6:08 PM on November 30.

Daylight saving time is not observed in Matamoros during 2025.

For reference, on June 21, the longest day of the year, the Sun rises at 6:09 AM and sets 13 hours, 50 minutes later, at 7:59 PM, while on December 21, the shortest day of the year, it rises at 7:46 AM and sets 10 hours, 28 minutes later, at 6:14 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for the fall of 2025. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

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 chance that a given day will be muggy in Matamoros is essentially constant during the fall, remaining around 0% throughout.

For reference, on July 17, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

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 in Matamoros is gradually increasing during the fall, increasing from 7.0 miles per hour to 7.9 miles per hour over the course of the season.

For reference, on March 26, the windiest day of the year, the daily average wind speed is 9.8 miles per hour, while on October 5, the calmest day of the year, the daily average wind speed is 6.8 miles per hour.

The lowest daily average wind speed during the fall is 6.8 miles per hour on October 10.

The wind direction in Matamoros during the fall is predominantly out of the east from September 1 to October 21 and the west from October 21 to November 30.

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 in Matamoros typically lasts for 8.6 months (264 days), from around March 10 to around November 29, rarely starting before February 6 or after April 3, and rarely ending before November 9 or after December 22.

During the fall in Matamoros, the chance that a given day is within the growing season is very rapidly decreasing falling from 100% to 48% over the course of the 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.

The average accumulated growing degree days in Matamoros are very rapidly increasing during the fall, increasing by 1,177°F, from 3,856°F to 5,033°F, over the course of the season.

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 in Matamoros is rapidly decreasing during the fall, falling by 1.8 kWh, from 6.1 kWh to 4.3 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of Matamoros are 26.762 deg latitude, -105.585 deg longitude, and 5,682 ft elevation.

The topography within 2 miles of Matamoros contains only modest variations in elevation, with a maximum elevation change of 463 feet and an average elevation above sea level of 5,741 feet. Within 10 miles contains only modest variations in elevation (2,566 feet). Within 50 miles contains large variations in elevation (6,470 feet).

The area within 2 miles of Matamoros is covered by grassland (98%), within 10 miles by grassland (88%), and within 50 miles by grassland (47%) and shrubs (36%).