Average Weather in Cactus Texas, United States
In Cactus, the summers are long, sweltering, oppressive, 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 46°F to 99°F and is rarely below 35°F or above 104°F.
Based on the beach/pool score, the best times of year to visit Cactus for hot-weather activities are from early May to mid July and from late August to late September.
The hot season lasts for 4.0 months, from May 17 to September 16, with an average daily high temperature above 92°F. The hottest day of the year is August 6, with an average high of 99°F and low of 77°F.
The cool season lasts for 2.6 months, from November 27 to February 16, with an average daily high temperature below 73°F. The coldest day of the year is January 5, with an average low of 46°F and high of 66°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 Cactus, 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 Cactus begins around May 5 and lasts for 1.8 months, ending around June 30. On June 4, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 77% of the time, and overcast or mostly cloudy 23% of the time.
The cloudier part of the year begins around June 30 and lasts for 10 months, ending around May 5. On January 5, 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 Cactus varies throughout the year.
The wetter season lasts 5.6 months, from April 27 to October 14, with a greater than 18% chance of a given day being a wet day. The chance of a wet day peaks at 28% on September 6.
The drier season lasts 6.4 months, from October 14 to April 27. The smallest chance of a wet day is 7% 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 28% on September 6.
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. Cactus experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Cactus. The most rain falls during the 31 days centered around May 22, with an average total accumulation of 2.4 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 Cactus varies over the course of the year. In 2021, the shortest day is December 21, with 10 hours, 22 minutes of daylight; the longest day is June 20, with 13 hours, 55 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:40 AM on June 10, and the latest sunrise is 1 hour, 12 minutes later at 7:52 AM on November 6. The earliest sunset is at 5:41 PM on December 1, and the latest sunset is 2 hours, 56 minutes later at 8:37 PM on June 30.
Daylight saving time (DST) is observed in Cactus 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
Cactus experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 7.0 months, from April 4 to November 5, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The muggiest day of the year is June 26, with muggy conditions 84% of the time.
The least muggy day of the year is January 22, 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 Cactus experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 5.7 months, from March 3 to August 27, with average wind speeds of more than 10.2 miles per hour. The windiest day of the year is July 13, with an average hourly wind speed of 12.1 miles per hour.
The calmer time of year lasts for 6.3 months, from August 27 to March 3. The calmest day of the year is January 1, with an average hourly wind speed of 8.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Cactus varies throughout the year.
The wind is most often from the south for 1.4 months, from January 21 to March 1; for 2.1 months, from June 12 to August 15; and for 1.5 months, from October 25 to December 10, with a peak percentage of 56% on July 18. The wind is most often from the east for 3.4 months, from March 1 to June 12 and for 2.3 months, from August 15 to October 25, with a peak percentage of 55% on September 8. The wind is most often from the north for 1.4 months, from December 10 to January 21, with a peak percentage of 33% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Cactus 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 Cactus for general outdoor tourist activities are from mid March to late May and from late September to mid November, with a peak score in the third 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 Cactus for hot-weather activities are from early May to mid July and from late August 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.
The growing season in Cactus typically lasts for 11 months (343 days), from around January 20 to around December 30, rarely starting after February 23, or ending before December 1.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Cactus should appear around January 13, only rarely appearing before January 8 or after January 22.
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 3.9 months, from April 14 to August 11, with an average daily incident shortwave energy per square meter above 6.5 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 12 to February 2, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest day of the year is December 19, with an average of 3.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Cactus are 27.907 deg latitude, -99.394 deg longitude, and 581 ft elevation.
The topography within 2 miles of Cactus contains only modest variations in elevation, with a maximum elevation change of 157 feet and an average elevation above sea level of 594 feet. Within 10 miles also contains only modest variations in elevation (433 feet). Within 50 miles contains only modest variations in elevation (791 feet).
The area within 2 miles of Cactus is covered by shrubs (50%) and grassland (50%), within 10 miles by shrubs (61%) and grassland (39%), and within 50 miles by shrubs (73%) and grassland (21%).
This report illustrates the typical weather in Cactus, 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 Cactus.
For each station, the records are corrected for the elevation difference between that station and Cactus 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 Cactus is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cactus and a given station.
The stations contributing to this reconstruction are: Laredo International Airport (58%, 42 kilometers, south); Cotulla–La Salle County Airport (32%, 64 kilometers, north); and Piedras Negras International Airport (10%, 138 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .