The National Weather Service has officially declared 2011 as the hottest summer on record for the Dallas-Fort Worth area. “Summer” is defined here as meteorological summer for record keeping purposes, June 1 to August 31.
The numbers show:
- The summer of 2011 had a daily average high of 101.2 degrees, slightly less than 1980’s 101.6
- The summer of 1980 had an average low of 76.7 degrees.
- The summer of 2011 had an average low of 79.7 degrees (warmest on record).
- The overall average for the summer of 1980 was 89.2 degrees.
- The overall average for the summer of 2011 was 90.6 degrees (warmest on record).
Despite the small edge 1980 has in average maximum temperature, the big lead 2011 gained in overnight lows more than made up the difference. In fact, 2011 observed many more nights of 80+ degrees for the overnight low than any other year.
The all-time record high minimum temperature at DFW was set on July 26th at 86 degrees, and tied three more times during August 2011. The old record was 85 degrees in Sep 1939.
- The year 1980 had 69 days of 100-or-higher temperatures.
- The year 2011 has seen 100-plus on 65 days (as of August 31).
- The summer of 1980 logged 42 consecutive 100-plus days.
- The summer of 2011 had 40 consecutive 100+ days.
Other heat statistics of note:
>>>2011 is the only year to have two 100+ streaks in the top 10.
>>>There were 40 days in a row of 100-or-better readings from July 2 to August 10, second longest on record at DFW.
>>>A new streak began August 15 and continues at 17 days of 100+as of August 31, which puts it in the #10 ranking (and still counting).
>>>The year 2011 has seen 18 days with high temperatures of 105 or more, classified as “extreme” heat. This is second only to 1980 which had 28 such days.