Average Weather in Sour Lake Texas, United States
In Sour Lake, the summers are long, hot, and oppressive; the winters are short and cold; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 44°F to 93°F and is rarely below 30°F or above 97°F.
Based on the tourism score, the best times of year to visit Sour Lake for warm-weather activities are from late March to late May and from late September to late October.
The hot season lasts for 4.0 months, from May 25 to September 24, with an average daily high temperature above 86°F. The hottest day of the year is August 6, with an average high of 93°F and low of 74°F.
The cool season lasts for 2.9 months, from November 29 to February 23, with an average daily high temperature below 68°F. The coldest day of the year is January 6, with an average low of 44°F and high of 61°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 Sour Lake, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Sour Lake begins around September 16 and lasts for 2.3 months, ending around November 26. On October 12, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 69% of the time, and overcast or mostly cloudy 31% of the time.
The cloudier part of the year begins around November 26 and lasts for 9.7 months, ending around September 16. On July 14, the cloudiest day of the year, the sky is overcast or mostly cloudy 49% of the time, and clear, mostly clear, or partly cloudy 51% 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 Sour Lake varies throughout the year.
The wetter season lasts 3.8 months, from May 23 to September 15, with a greater than 32% chance of a given day being a wet day. The chance of a wet day peaks at 42% on June 20.
The drier season lasts 8.2 months, from September 15 to May 23. The smallest chance of a wet day is 22% on April 15.
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 42% on June 20.
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. Sour Lake experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Sour Lake. The most rain falls during the 31 days centered around June 9, with an average total accumulation of 4.9 inches.
The least rain falls around August 1, with an average total accumulation of 3.0 inches.
Average Monthly Rainfall
The length of the day in Sour Lake varies significantly over the course of the year. In 2018, the shortest day is December 21, with 10 hours, 12 minutes of daylight; the longest day is June 21, with 14 hours, 5 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:15 AM on June 11, and the latest sunrise is 1 hour, 18 minutes later at 7:33 AM on November 3. The earliest sunset is at 5:17 PM on December 1, and the latest sunset is 3 hours, 6 minutes later at 8:23 PM on June 30.
Daylight saving time (DST) is observed in Sour Lake during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
Sour Lake experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 6.9 months, from April 5 to November 1, during which time the comfort level is muggy, oppressive, or miserable at least 28% of the time. The muggiest day of the year is July 22, with muggy conditions 99% of the time.
The least muggy day of the year is January 23, with muggy conditions 4% 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 Sour Lake experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.6 months, from October 17 to June 4, with average wind speeds of more than 5.9 miles per hour. The windiest day of the year is April 11, with an average hourly wind speed of 7.1 miles per hour.
The calmer time of year lasts for 4.4 months, from June 4 to October 17. The calmest day of the year is August 16, with an average hourly wind speed of 4.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Sour Lake varies throughout the year.
The wind is most often from the south for 7.3 months, from February 5 to September 13 and for 1.7 months, from October 14 to December 6, with a peak percentage of 69% on June 27. The wind is most often from the east for 1.0 months, from September 13 to October 14, with a peak percentage of 37% on September 20. The wind is most often from the north for 2.0 months, from December 6 to February 5, with a peak percentage of 37% on January 1.
Sour Lake is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 4.0 months, from May 31 to September 30, with an average temperature above 80°F. The day of the year with the warmest water is August 12, with an average temperature of 86°F.
The time of year with cooler water lasts for 3.2 months, from December 9 to March 17, with an average temperature below 64°F. The day of the year with the coolest water is January 27, with an average temperature of 58°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Sour Lake 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 Sour Lake for general outdoor tourist activities are from late March to late May and from late September to late October, 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 times of year to visit Sour Lake for hot-weather activities are from early May to early July and from mid 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 Sour Lake typically lasts for 9.7 months (294 days), from around February 15 to around December 5, rarely starting before January 10 or after March 19, and rarely ending before November 7 or after December 30.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Sour Lake should appear around January 18, only rarely appearing before January 11 or after January 30.
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 3.3 months, from April 4 to July 13, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest day of the year is June 3, with an average of 6.6 kWh.
The darker period of the year lasts for 2.6 months, from November 15 to February 2, with an average daily incident shortwave energy per square meter below 3.6 kWh. The darkest day of the year is December 24, with an average of 2.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Sour Lake are 30.140 deg latitude, -94.411 deg longitude, and 39 ft elevation.
The topography within 2 miles of Sour Lake is essentially flat, with a maximum elevation change of 23 feet and an average elevation above sea level of 40 feet. Within 10 miles is also essentially flat (85 feet). Within 50 miles is essentially flat (469 feet).
The area within 2 miles of Sour Lake is covered by herbaceous vegetation (61%) and cropland (29%), within 10 miles by herbaceous vegetation (60%) and cropland (27%), and within 50 miles by herbaceous vegetation (43%) and cropland (20%).
This report illustrates the typical weather in Sour Lake, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Sour Lake.
For each station, the records are corrected for the elevation difference between that station and Sour Lake 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 Sour Lake is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Sour Lake and a given station.
The stations contributing to this reconstruction are: Beaumont Municipal Airport (71%, 20 kilometers, east); Jasper, Jasper County-Bell Field Airport (8%, 91 kilometers, northeast); George Bush Intercontinental Airport (7%, 93 kilometers, west); Ellington Field (7%, 93 kilometers, southwest); and Montgomery County Airport (7%, 99 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .