100-Degree Temperatures in North Texas

Wednesday's high is forecast to be 100 degrees

It is official: Triple-digit temperatures have arrived in North Texas.

Dallas/Fort Worth International Airport hit 101 degrees on Friday, June 22. The following Sunday was close with the high reaching 99 degrees.

Our first 100-degree day came a little ahead of schedule. The average date for the first triple digit day is July 1.

Here are some 100 degree facts for DFW:

  • Average date of last 100 degrees: Aug. 26
  • Earliest occurrence: March 9, 1911 (100 degrees)
  • Latest occurrence: Oct. 3, 1951 (106 degrees)
  • Earliest last occurrence: May 30, 1928 (101 degrees)
  • Latest first occurrence: Aug. 23, 1989 (101 degrees)

We could see our next 100-degree day this week. Wednesday and Thursday, a strong ridge in the jet stream will be centered over North Texas. This will bring the hottest weather of the week. Wednesday's high is forecast to be 100 degrees.


On average North Texas sees 18, 100-degree days per year. The most we have ever seen in one year: 71 in 2011. Here are some other extremes:

  • Fewest in a calendar year: 0 (1973, 1906)
  • Most consecutive: 42 (Jun 23 - Aug 3, 1980)
  • Most in a month: 31 (Jul 1980)
  • Greatest number of months in a year with at least one occurrence: 5
  • 2006 - April, June, July, August, September
  • 1998 - May, June, July, August, September
  • 1925 - April, June, July, August, September
  • 1911 - March, May, June, July, August
  • Only month to record both 100 degrees and 32 degrees, Mar 1916 (25 degrees on March 3 and 100 degrees on the March 21)

Dog Days of Summer 2018

Get the latest forecast information from NBC 5's team of Weather Experts here.

Heat Advisory Precautions
With such oppressive heat in the forecast, North Texans are reminded to check on their friends and loved ones with health problems as they may be among the most susceptible to heat exhaustion and heat stroke.
As always, never leave young children or pets unattended in an enclosed vehicle, even for a short amount of time, as temperatures can quickly rise to threatening levels.
Pets should not be left unattended outdoors for more than a few minutes.
Water is the cornerstone to staying safe this week, according to the Centers for Disease Control and Prevention. Officials said it's important to start drinking before becoming thirsty and if you know you're going to be out in the heat, begin drinking water the night before.
Officials recommend staying indoors, but anyone who must be outside should drink a cup of water about every 20 minutes and wear lightweight, loose-fitting clothing.
Symptoms of Heat Stroke: CDC
According to the Centers for Disease Control and Prevention, the symptoms of heat stroke include hot, dry skin or profuse sweating; hallucinations, chills, throbbing headache, high body temperature, confusion/dizziness and slurred speech.
Take the following steps to treat a worker with heat stroke: Call 911 and notify their supervisor. Move the sick worker to a cool shaded area. Cool the worker using methods such as: Soaking their clothes with water. Spraying, sponging, or showering them with water. Fanning their body.

Symptoms of Heat Exhaustion: CDC
According to the Centers for Disease Control and Prevention, the symptoms of heat exhaustion include heavy sweating, extreme weakness or fatigue, dizziness and confusion, nausea, clammy or moist skin, pale or flushed complexion, muscle cramps, slightly elevated body temperature and fast or shallow breathing.
Treat a worker suffering from heat exhaustion with the following: Have them rest in a cool, shaded or air-conditioned area. Have them drink plenty of water or other cool, nonalcoholic beverages. Have them take a cool shower, bath, or sponge bath.
Dos and Don'ts in Extreme Heat

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