After a record-breaking August with respect to hot temperatures in Del Rio, it's no surprise that this summer has also claimed top distinction in the record books for heat. While records aren't specifically taken for seasons, since start and end dates of these seasons fluctuate slightly from year to year, it's unlikely that these fluctuations in the dates make significant impact on temperature records (perhaps more so on precipitation records).
Since weather records have been taken beginning in 1906, 2019's summer (June 21st - September 22nd) claimed first place in average daily maximum temperature, average daily minimum temperature, average daily temperature (the average of the maximum and minimum), the total number of 100°F-plus days, and scored in 6th place as the driest on record.
For Average Daily High Temperature: This summer averaged 100.3°F, coming in at first place, with the normal average high (since 1906) of 95°F.
For Average Daily Low Temperature: This summer average 76.9°F, coming in at first place, with the normal average low (since 1906) of 74°F.
The Average Daily Temperature: Combining the average highs and lows, 2019 comes in first place with approximately 88.6°F, with the normal average (since 1906) being 84.5°F.
This year also placed in first place for triple-digits, with 60 days of 100°F-plus high temperatures.
Although the recent drought does put this year as the driest on record from July 1st until the end of summer (with only 0.01 inches recorded at the Del Rio Airport), rainfall during the second half of June (which was technically during the summer season) contributed to a total rainfall accumulation of 1.21 inches during the entire summer, placing 2019 in sixth place overall for driest on record, with a normal average (since 1906) of approximately 6.03 inches.
Of note, 1.13 inches fell on June 21st, 2019 - which was the first full day of summer this year - and aside from this, only 0.08 inches of rain fell between June 22nd and September 22nd. If it wasn't for June 21st's rainfall, this summer would place in first for driest on record.
Very hot and very dry - the weather this summer in Del Rio. This past June placed as the second-wettest June ever recorded, but was followed by a very dry July, which tied a handful of other years as the driest on record. This August, however, decided to go the extra mile, claiming not only some top dry records, but numerous heat records as well.
All records are taken from the weather station at Del Rio International Airport. Records date back to 1905.
First, Del Rio only officially received trace precipitation (less than 0.01 inches) this August, as it did in July. While some parts of town did receive some additional rainfall, the Del Rio Airport records the official observation for climate data for the National Weather Service.
This August, Del Rio tied five other years for the fifth-driest August on record - those years being 1929, 1951, 1957, 1963, and 1985. Four other years were technically drier, receiving absolutely no precipitation - 1907, 1924, 1943, and 1952.
The July-August combination this year of only trace precipitation puts 2019 tied with only two other July-August combinations as the driest on record - 1951 & 1957. This dry combination of July and August has put Del Rio behind the curve for what is expected as far as annual precipitation accumulation - which should be at about 13 1/2 inches year-to-date. So far this year, Del Rio has accumulated 13.26 inches.
Del Rio was placed in "Moderate Drought" status in August.
This August was the hottest August on record in Del Rio by way of average daily maximum temperature, average daily mean temperature, and average daily minimum temperature. It also had more 100 degree days than any other August on record.
This August tied for first place on hottest recorded August temperature (109°F on Aug 26th), tying with Aug 17th, 1969. This is one of only 15 days ever recorded that the thermometer has reached 109°F in Del Rio.
This August also came in tied for first with July 1980 as far as total number of days with a temperature of at least 100 degrees (all 31 days). With the exception of July 1980, no other month has recorded 100 degrees on every day. Additionally, this August recorded more daily minimum temperatures at or above 80 degrees (a total of 13 days) than any other August on record, only falling short for the all-time title behind July of 1998, which had 20 days of low temperatures at or above 80 degrees.
This August had the highest monthly maximum temperature average ever recorded (103.9°F), beating July 1998's 103.1°F record, and two degrees higher than any other August on record. The average daily maximum for a normal August is about 97 degrees.
This August came in first place on record, tying with July 1998, with an average daily temperature of 91.6 degrees, which is the average between the highest and lowest daily temperatures. The normal average daily temperature in August is about 86 degrees.
This August came in second place ever recorded by average daily minimum temperature, with an average low temperature of 79.3 degrees. First place goes to July of 1998, with an average of 80.2 degrees. As mentioned previously, July of 1998 is the only other month on record with more days recording a low temperature of at or above 80 degrees than this August.
Along with being very dry, this year's July-August combination also recorded the highest high temperature average on record, at just under 102 degrees, the highest average temperature on record of 89.8 degrees, and in fourth place for the warmest low temperature average on record, with 77.7 degrees.