Climate and Average Weather Year Round in Pearsall United States

In Pearsall, the summers are hot and muggy, the winters are short and cool, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 43°F to 97°F and is rarely below 31°F or above 102°F.

Based on the beach/pool score, the best time of year to visit Pearsall for hot-weather activities is from mid May to late September.

The hot season lasts for 3.8 months, from May 24 to September 18, with an average daily high temperature above 91°F. The hottest month of the year in Pearsall is August, with an average high of 96°F and low of 74°F.

The cool season lasts for 2.8 months, from November 26 to February 19, with an average daily high temperature below 71°F. The coldest month of the year in Pearsall is January, with an average low of 44°F and high of 65°F.

In Pearsall, 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 Pearsall begins around May 5 and lasts for 1.9 months, ending around July 2.

The clearest month of the year in Pearsall is June, during which on average the sky is clear, mostly clear, or partly cloudy 73% of the time.

The cloudier part of the year begins around July 2 and lasts for 10 months, ending around May 5.

The cloudiest month of the year in Pearsall is January, during which on average the sky is overcast or mostly cloudy 44% of the time.

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

The wetter season lasts 6.0 months, from April 22 to October 22, with a greater than 20% chance of a given day being a wet day. The month with the most wet days in Pearsall is May, with an average of 8.5 days with at least 0.04 inches of precipitation.

The drier season lasts 6.0 months, from October 22 to April 22. The month with the fewest wet days in Pearsall is December, with an average of 3.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Pearsall is May, with an average of 8.5 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 29% on May 29.

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. Pearsall experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Pearsall. The month with the most rain in Pearsall is May, with an average rainfall of 2.9 inches.

The month with the least rain in Pearsall is December, with an average rainfall of 1.1 inches.

The length of the day in Pearsall varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 18 minutes of daylight; the longest day is June 20, with 13 hours, 59 minutes of daylight.

The earliest sunrise is at 6:37 AM on June 10, and the latest sunrise is 1 hour, 14 minutes later at 7:51 AM on March 10. The earliest sunset is at 5:38 PM on December 1, and the latest sunset is 3 hours, 0 minutes later at 8:38 PM on June 30.

Daylight saving time (DST) is observed in Pearsall during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

The figure below presents a compact representation of key lunar data for 2024. 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.

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.

Pearsall experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.7 months, from April 8 to October 31, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The month with the most muggy days in Pearsall is July, with 25.4 days that are muggy or worse.

The month with the fewest muggy days in Pearsall is January, with 0.7 days that are muggy or worse.

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 Pearsall experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.7 months, from February 23 to August 14, with average wind speeds of more than 9.3 miles per hour. The windiest month of the year in Pearsall is May, with an average hourly wind speed of 10.3 miles per hour.

The calmer time of year lasts for 6.3 months, from August 14 to February 23. The calmest month of the year in Pearsall is December, with an average hourly wind speed of 8.2 miles per hour.

The predominant average hourly wind direction in Pearsall varies throughout the year.

The wind is most often from the south for 1.1 months, from January 25 to February 28; for 2.8 months, from May 29 to August 23; and for 1.5 months, from October 23 to December 9, with a peak percentage of 60% on July 23. The wind is most often from the east for 3.0 months, from February 28 to May 29 and for 2.0 months, from August 23 to October 23, with a peak percentage of 51% on September 5. The wind is most often from the north for 1.5 months, from December 9 to January 25, with a peak percentage of 32% on January 1.

To characterize how pleasant the weather is in Pearsall 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 Pearsall for general outdoor tourist activities are from late March to early June and from mid September to early November, with a peak score in the last week of April.

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 Pearsall for hot-weather activities is from mid May to late September, with a peak score in the second week of June.

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.

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 Pearsall typically lasts for 9.7 months (295 days), from around February 14 to around December 5, rarely starting before January 14 or after March 15, and rarely ending before November 12 or after December 30.

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 in Pearsall should appear around January 16, only rarely appearing before January 10 or after January 27.

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 4.1 months, from April 11 to August 14, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest month of the year in Pearsall is June, with an average of 7.1 kWh.

The darker period of the year lasts for 2.7 months, from November 11 to February 3, with an average daily incident shortwave energy per square meter below 4.0 kWh. The darkest month of the year in Pearsall is December, with an average of 3.3 kWh.

For the purposes of this report, the geographical coordinates of Pearsall are 28.892 deg latitude, -99.095 deg longitude, and 630 ft elevation.

The topography within 2 miles of Pearsall contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 620 feet. Within 10 miles also contains only modest variations in elevation (328 feet). Within 50 miles contains only modest variations in elevation (1,791 feet).

The area within 2 miles of Pearsall is covered by cropland (42%), grassland (33%), shrubs (14%), and artificial surfaces (11%), within 10 miles by shrubs (46%) and cropland (29%), and within 50 miles by shrubs (58%) and grassland (18%).