100 Degree Weather Facts for the DFW Area

It has been a very wet spring so far, but before long it will be 100 degrees and rainfall will likely become a distant memory. You might recall that last summer was a hot one—we had 55 days of at least 100 degrees (we average 20).

That begs the question: What will summer 2024 be like? Recently, the weather team of WFAA made predictions of how many triple-digit temperature days that we will have this summer.

The following are their predictions:

Pete Delkus—22 days     Greg Fields—18 days    Jesse Hawila—21 days     Kyle Roberts—20 days     Mariel Ruiz—19 days

For those of you weather nerds (like myself) who need more information on 100-degree days, thanks to the National Weather Service & weatherunderground.com, I have it for you.

• Average date of first 100°F: July 1
  • 2023—June 25^th
  • 2022—June 11^th
  • 2021—July 25^th
  • 2020—July 12^th
  • 2019—July 30^th
  • 2018—June 22^nd
  • 2017—June 23^rd
  • 2016—July 22^nd
  • 2015—July 26^th
  • 2014—July 13^th
  • 2013—June 27^th
• Average date of last 100°F: August 26
  • 2023—Sept. 24^th
  • 2022—Aug. 17^th
  • 2021—Sept. 20^th
  • 2020—Aug. 29^th
  • 2019—Sept. 7^th
  • 2018—Aug. 18^th
  • 2017—Aug. 19^th
  • 2016—Sept. 20^th
  • 2015—Sept. 7^th
  • 2014—Sept. 10^th
  • 2013—Sept. 4^th
• Earliest occurrence: Mar 9, 1911 (100°F)
• Latest occurrence: Oct 3, 1951 (106°F)
• Average number of 100-degree days: 20
  • 2023—55 total 100-degree days
  • 2022—47 total 100-degree days
  • 2021—8 total 100-degree days
  • 2020—9 total 100-degree days
  • 2019—14 total 100-degree days
  • 2018—23 total 100-degree days
  • 2017—10 total 100-degree days
  • 2016—18 total 100-degree days
  • 2015—15 total 100-degree days
  • 2014—15 total 100-degree days
  • 2013—23 total 100-degree days
• Longest 100-degree streaks
  • 1980 – 42 days
  • 2011 – 40 days
  • 1998 – 29 days
  • 1952 – 25 days
  • 1999 – 24 days
• Most in a calendar year: 71 (2011)
• Fewest in a calendar year: 0 (1973 & 1906)
• Most consecutive: 42 (1980)
• Most in a month: 31 (July 1980)
• Average number of 100-degree days by month
  • May—0.1 day
  • June—1.6 days
  • July—7.4 days
  • August—9.7 days
  • September—1.4 day
• Highest temperature ever recorded: 113 degrees (1980)
  • 2023—110 degrees
  • 2022—109 degrees
  • 2021—102 degrees
  • 2020—106 degrees
  • 2019—102 degrees
  • 2018—109 degrees
  • 2017—102 degrees
  • 2016—107 degrees
  • 2015—106 degrees
  • 2014—104 degrees
  • 2013—104 degrees

In the record-breaking year of 2011 when we had 71 days of at least 100 degrees, we had our first 100-degree day on June 13^th and our last one on September 29^th—what a summer to remember! July was brutal that year with all but one day reaching 100 degrees. For those of you who were in DFW in 1980, every single day in July reached 100 degrees.

Hopefully, this year will be nothing like 2011 or 1980!

We hope that you enjoy your pool this summer!

https://www.weather.gov/fwd/d100data