Mother Nature supplied fireworks of her own on July 4 as a destructive windstorm swept across Oklahoma, with Norman hardest hit. The month closed under a punishing heat wave, with widespread triple-digit temperatures during its final third. Between those dramatic bookends, rainfall fell short across most of the state and drought coverage held nearly steady at about 44%, setting the stage for heightened drought concerns in August.
After months dominated by rain and severe weather, summer finally reclaimed the spotlight in Oklahoma during July. The state’s wet streak ended, replaced by rising heat and drying conditions. A lone tornado touchdown near Vance AFB extended the tornado streak to five consecutive months, bringing the 2025 total through July to 88. Sweltering July heat held off for much of the month but surged during the final two weeks—only to be abruptly cut short by an unusually strong cold front on July 31.
Oklahomans enjoyed two stretches of mild weather during July, providing brief respites from the otherwise hot conditions and a tantalizing taste of fall weather to come. Two substantial cold fronts brought cooler temperatures and moisture, keeping high temperatures 10-15 degrees below normal during these periods. Oklahoma City experienced seven consecutive days with highs below 90 degrees from July 17-23, and 10 days overall during the month. Tulsa had 11 days below 90 degrees, including six consecutive days from July 17-22.
The unusually wet and mild weather Oklahoma enjoyed through much of May and June continued into July, providing the state with uncharacteristic summertime drought relief. The Southern Plains heat dome still managed to meander its way over Oklahoma for short periods, however, basting the state in intense heat and stifling humidity. The Oklahoma Mesonet site at Pauls Valley reached a network-record heat index of 126 degrees on July 13, besting the previous record of 125 degrees from Calvin back on Aug. 9, 1999. The Mesonet’s heat index records date back to 1997.
The seemingly impenetrable heat wave and dry spell that had punished Oklahoma since early June continued through nearly all of July, giving Oklahoma the type of scorching hot weather unseen in the state since the brutal summers of 2011 and 2012. A strong cold front snuck through the heat dome’s defenses near the end of the month to bring some relief, but the damage was done. The combination of hot weather, a lack of significant moisture, and relentless sunshine combined to plunge Oklahoma into flash drought that had covered the entire state by the end of July.
Oklahoma’s July was mild for the most part, and a bit wet for much of the state. Extreme temperatures—at least as read on the thermometer—were in short supply, but the pressure cooker heat due to high humidity seemed to be well stocked. Severe weather did strike sporadically through the month, mostly in the form of severe winds as is common to summer months in the Southern Plains. One tornado touched down near Yale in Payne County on July 7, an EF-1 twister that damaged homes and outbuildings.
July brought a near miraculous recovery to much of Oklahoma, which was faced with an intensifying drought headed into summer’s scorching middle stanza. Uncharacteristically wet conditions succeeded in beating the drought back to a more manageable level, however, especially across the hardest hit areas in northern and central Oklahoma. Drought covered as much as 51 percent of the state on July 7 according to the U.S. Drought Monitor. That coverage was reduced nearly in half by the end of July, however, eventually encompassing a little less than 26 percent of the state.
Drought returned to the state for the first time since March 12, a stark reminder that spring deluges can quickly be forgotten during the unforgiving Oklahoma summer. The abrupt end of the moisture actually extended back to mid-June in some areas, but the deficits widened further during July. The lack of rain coincided with intermittent periods of hot, windy weather. Those sporadic bouts of extreme summer conditions helped to accelerate the drought development process, despite the month being cooler than normal overall.
Mother Nature threw Oklahoma a Hail Mary during the final week of July, offering drought-quenching rains and a glorious preview of fall. That brief seasonal transformation followed a dose of brutal summer weather that saw highs soar above 110 degrees and the heat index hit 120. The middle two weeks were especially fierce, culminating with record-breaking heat from the 19th through the 22nd. Temperatures reached 113 degrees at the Grandfield and Tipton Mesonet sites on both the 19th and 20th.
July followed Mother Nature’s customary script for mid-summer in Oklahoma, complete with long stretches of sun and scorching temperatures, wildly varying rainfall, and rapidly intensifying drought conditions. Rainfall fortunes were separated roughly between the haves to the southeast of I-44 and the have-nots to the northwest. Parts of the southeast saw more than 10 inches of rain, while less than an inch fell from central though west central Oklahoma. The precipitation extremes exemplified the moisture disparity within the state.