This was the last day of a nine-day heat wave, and the sixteenth day of the past eighteen (since June 27) to have have a high of 90° or hotter; six were 98° or hotter.
Today's high of 92° was the summer's first reading in the 90s - the third latest date on record for this occurrence. Only 1869 and 1877 had later dates (July 16 and 26, respectively). This was also the third year in a row in which the high temperature topped 90° on this date.
In a 30-minute period, between 4:34-5:04 PM, 0.44" of rain fell during a thunderstorm. Rain continued until 10 PM, and amounted to just under an inch.
Low temperatures during the past four days were: 61°-62°-63°-64° (today). The typical low during these days is 69°.
A strong thunderstorm dumped 0.51" of rain in fifteen minutes (1:51-2:06 P M).
The air was thick with humidity, and the dew point was in the 70s all day. Although the temperature failed to reach 90° (the high was 88°), the wicked humidity produced heat indexes in the mid-90s. Some relief was delivered by a strong, but brief, thunderstorm between 4:00 and 4:30 PM that dumped 0.62" of rain in about 15 minutes. However, this didn't dissipate the humidity as the dew point rose to an unbearable 76° at around 7 PM.
Today was the third day in a row with a high in the 90s, making this the first heat wave of the year. With highs of 90°-91°-90° (today) this was one of the most tepid 3-day heat waves on record. Only three other heat waves of this length have been "cooler" - in 1873, 1939, and 2013. (To read an analysis about tepid 4-day heat waves click here.)