The city of Boerne is going through one of its worst late spring – or anytime – heat waves in its history as triple-digit temperatures have been semi-regular during the first half of June as have daily record highs.
Through the first half of the month, the daily high temperature is averaging almost 9 degrees warmer than normal while the average actual temperature throughout the month is registering more than 6 degrees above the norm.
If the temperature trend continues through the rest of the month, statistics show Boerne could experience its hottest June this century.
National Weather Service information shows Boerne’s average high temperature through Wednesday has been 97.9 degrees. The norm is 89. The average temperature throughout the month through June 15 is 84.7 degrees, or 6.1 degrees higher than normal.
The hottest June on record so far this century was 2018 when the average temperature for the entire month was 83.9 degrees.
So far, through June 15, six record highs have been set and 100 degrees or higher has been recorded at Boerne Stage Field on five days, with 103-degree readings registered on back-to-back days June 12 and 13. On three other days, the thermometer topped out at 99 degrees, and the high every day has been at least 90.
The normal high temperature for the first half of June averages in the upper 80s.
Also, only 1 one-hundredth of an inch of rain has fallen this month, increasing the local drought that already has reached “exceptional,” according to the U.S. Drought Monitor. Normal June precipitation in Boerne is 1.67 inches.
The first half of June has accelerated what already has been a warm year as the six recordhigh daily temperatures recorded so far this month brings the year’s total to 13. Four of those occurred in May in addition to the six so far this month.
National Weather Service statistics show there only have been two single months in Boerne’s history since weather records have been kept beginning in 1898 that more record high temperatures have been set than this month. In August 1925, seven new highs were reached. In September 2000, eight daily records were set with seven of them – between 101 and 109 degrees – on consecutive days Sept. 1-7.
The all-time record high temperature in June is 105 degrees, set twice – in 1910 and 1980. The highest temperature ever recorded in Boerne is 112 in August 1925.
The 103 degrees reached on June 12 and 13 is the highest temperature recorded this month during the 21st century. A high of 103 also was reached in June 2013.
The low for the month so far has been 67 degrees, reached overnight on both June 4 and 5. The average low in June so far is 71.3. The normal average low for the month is 68.1 degrees.
Also, when looking at the 21st century only, there have been nine days this month out of the first 15 where the maximum temperature recorded this year is the highest since 2000. On three other days, the high was the second hottest.
The mean June high temperature in Boerne so far this century is 97 degrees. The average temperature so far during the same time period has been 79.4 degrees.
Historical record highs have been set so far this month on June 2 (97 degrees), June 6 (99), June 7 (102), June 8 (101), June 12 (103) and June 13 (103), according to statistics from the NWS in New Braunfels, the station that keeps track of Boerne’s weather.
The number of triple-digit highs this June is more than any other June in the city’s history. In 1906 and 1925, three 100-degree-or-higher temperatures were reached. In 1953 and 2011, two were recorded.
The short-term forecast predicts high temperatures through the early part of next week to be in the mid to upper 90s. There is no rain in the forecast.
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