Average Weather in Rio Bravo Texas, United States
In Rio Bravo, the summers are long, sweltering, muggy, and windy; the winters are short, cool, and dry; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 48°F to 99°F and is rarely below 36°F or above 104°F.
Based on the beach/pool score, the best times of year to visit Rio Bravo for hot-weather activities are from early May to mid July and from mid to late September.
The hot season lasts for 4.1 months, from May 12 to September 16, with an average daily high temperature above 93°F. The hottest day of the year is August 5, with an average high of 99°F and low of 78°F.
The cool season lasts for 2.6 months, from November 27 to February 14, with an average daily high temperature below 74°F. The coldest day of the year is January 5, with an average low of 48°F and high of 68°F.
Average High and Low Temperature
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
In Rio Bravo, 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 in Rio Bravo begins around May 2 and lasts for 1.9 months, ending around June 29. On June 4, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 78% of the time, and overcast or mostly cloudy 22% of the time.
The cloudier part of the year begins around June 29 and lasts for 10 months, ending around May 2. On August 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 46% of the time, and clear, mostly clear, or partly cloudy 54% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Rio Bravo varies throughout the year.
The wetter season lasts 5.3 months, from May 1 to October 11, with a greater than 19% chance of a given day being a wet day. The chance of a wet day peaks at 30% on September 13.
The drier season lasts 6.7 months, from October 11 to May 1. The smallest chance of a wet day is 8% on December 14.
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 30% on September 13.
Daily Chance of Precipitation
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. Rio Bravo experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Rio Bravo. The most rain falls during the 31 days centered around September 15, with an average total accumulation of 2.6 inches.
The least rain falls around December 17, with an average total accumulation of 0.7 inches.
Average Monthly Rainfall
The length of the day in Rio Bravo varies over the course of the year. In 2021, the shortest day is December 21, with 10 hours, 25 minutes of daylight; the longest day is June 20, with 13 hours, 52 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:42 AM on June 10, and the latest sunrise is 1 hour, 10 minutes later at 7:52 AM on November 6. The earliest sunset is at 5:43 PM on November 30, and the latest sunset is 2 hours, 54 minutes later at 8:36 PM on July 1.
Daylight saving time (DST) is observed in Rio Bravo during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.
Sunrise & Sunset with Twilight and Daylight Saving Time
The figure below presents a compact representation of key lunar data for 2021. 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.
Moon Rise, Set & Phases
Rio Bravo experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 7.1 months, from April 5 to November 7, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The muggiest day of the year is June 24, with muggy conditions 79% of the time.
The least muggy day of the year is January 23, with muggy conditions 1% of the time.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Rio Bravo experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 5.6 months, from March 8 to August 28, with average wind speeds of more than 10.6 miles per hour. The windiest day of the year is July 14, with an average hourly wind speed of 12.9 miles per hour.
The calmer time of year lasts for 6.4 months, from August 28 to March 8. The calmest day of the year is January 1, with an average hourly wind speed of 8.3 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Rio Bravo varies throughout the year.
The wind is most often from the east for 4.9 months, from January 29 to June 27 and for 3.4 months, from July 28 to November 9, with a peak percentage of 58% on September 5. The wind is most often from the south for 1.0 months, from June 27 to July 28 and for 4.0 weeks, from November 9 to December 7, with a peak percentage of 52% on July 18. The wind is most often from the north for 1.7 months, from December 7 to January 29, with a peak percentage of 35% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Rio Bravo 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 times of year to visit Rio Bravo for general outdoor tourist activities are from mid March to mid May and from late September to mid November, with a peak score in the last week of October.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Rio Bravo for hot-weather activities are from early May to mid July and from mid to late September, with a peak score in the first week of June.
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.
While it does not do so every year, freezing temperatures are seen in Rio Bravo over some winters. The day least likely to be in the growing season is January 7, with a 71% chance.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Rio Bravo should appear around January 12, only rarely appearing before January 8 or after January 20.
Growing Degree Days
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 3.8 months, from April 15 to August 9, with an average daily incident shortwave energy per square meter above 6.6 kWh. The brightest day of the year is June 13, with an average of 7.3 kWh.
The darker period of the year lasts for 2.6 months, from November 13 to February 2, with an average daily incident shortwave energy per square meter below 4.2 kWh. The darkest day of the year is January 1, with an average of 3.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Rio Bravo are 27.364 deg latitude, -99.480 deg longitude, and 404 ft elevation.
The topography within 2 miles of Rio Bravo contains only modest variations in elevation, with a maximum elevation change of 190 feet and an average elevation above sea level of 424 feet. Within 10 miles also contains only modest variations in elevation (358 feet). Within 50 miles contains only modest variations in elevation (751 feet).
The area within 2 miles of Rio Bravo is covered by grassland (52%), shrubs (24%), and cropland (20%), within 10 miles by shrubs (54%) and grassland (32%), and within 50 miles by shrubs (68%) and grassland (20%).
This report illustrates the typical weather in Rio Bravo, 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
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Rio Bravo.
For each station, the records are corrected for the elevation difference between that station and Rio Bravo according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Rio Bravo is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Rio Bravo and a given station.
The stations contributing to this reconstruction are: Laredo International Airport (73%, 19 kilometers, north); Zapata County Airport (17%, 50 kilometers, southeast); and Jim Hogg County Airport (10%, 73 kilometers, east).
Time zones for airports and weather stations are provided by AskGeo.com .