monthly climate summary

Cool weather dominated a good part of May, and possibly robbed Mother Nature of the heat needed for her most exotic springtime menu item; tornadoes. There was still the normal offering of large hail, damaging winds, and flash flooding, but the twister count was below average. The National Weather Service indicated a preliminary total of 13 tornadoes for the month, well below the 1950-2019 average of 24.4, and a relatively minuscule tally compared to last May’s all-time Oklahoma monthly record of 105. The 2020 preliminary total of 33 also falls below the January-May average of 41.

It’s difficult to say which weather hazard should claim top billing for April. Two late season freeze events made their pitch by battering the state’s winter wheat crop and fruit orchards, primarily on the 15th and again on the 18th. Temperatures dropped into the 20s as far south as the Red River, with a bit of light snow falling across the western half of the state during the extended cold snap. Drought also made a bid for the top spot by threatening to spread from its confines in the far western Panhandle to a much broader area of western Oklahoma.

Winter seemed to take a final bow after February in Oklahoma, leaving March with a warm and wet transition to spring. Areas of southern Oklahoma failed to see temperatures dip below freezing, and Hollis managed to hit 100 degrees on one of the earliest dates in state history. The lack of wintry weather was replaced by active spring weather. Severe storms were not prevalent, but there were three distinct storm systems that brought damaging weather to the state. Severe storms on the 19th spawned at least two tornadoes according to preliminary data from the National Weather Service.

In February, Oklahoma finally received a month worthy of winter. It wasn’t tremendously cold, nor was it excessively wet, but it did provide much of Oklahoma with its first decent snow of the season. A strong storm system passed through the state on February 5 and dropped sleet, freezing rain, and 4-6 inches of snow along and around the Interstate 44 corridor. Higher totals of 6-8 inches were reported in the southwest, with a few localized areas receiving as much as 10 inches.

Although January’s weather continued this winter’s general tilt towards unusually mild conditions, that failed to prevent several bouts of wintry weather from striking the state. In true Oklahoma fashion, the first bout of snow and ice was foreshadowed by severe weather, including a couple of tornadoes. Those weak twisters struck on January 10 near Prague and Park Hill according to National Weather Service reports. The Park Hill tornado was the more destructive of the two, damaging roofs, outbuildings and trees.

Warm and mostly dry December weather dashed any hopes of walking in a winter wonderland, including dreams of a white Christmas. Very little in the way of wintry weather was seen during the month, save for a couple of inches of snow in the western Panhandle and a few bouts with freezing drizzle and fog. Christmas Day itself was the second warmest on record with a statewide average temperature of 57 degrees, topped only by 2016’s 57.6 degrees and far removed from 1983’s record cold of 4.7 degrees. Spring weather took up the slack for the dearth of winter excitement.

November’s weather was somewhat tame by Oklahoma’s standards, with cold weather dominating the headlines. Several intrusions of arctic air blasted the country during November, and Oklahoma caught the edges of the frigid weather each time. Along with that cold came a mostly dry month across a droughty western Oklahoma. Heavy rains fell across the eastern half. There was a bit of snow across far northern Oklahoma – totals of 2-4 inches were observed in the Panhandle.

September normally sees at least one or two decent cold fronts to whet the appetite for fall. Mother Nature had different plans this year, however, steering summer right past the beginning of autumn and giving Oklahoma its fourth warmest September since records began in 1895. The Panhandle experienced its warmest September on record, while the north central, southeast, and west central areas of the state had their second warmest. Tulsa ended with their second warmest September on record at 81.2 degrees, 8.2 degrees above normal.

Drought had gained a toehold across western and central Oklahoma during a hot, dry first half of August; further spread and intensification seemed inevitable. All the while eastern Oklahoma was being inundated by heavy rains and flooding. Then the rains spread west, bringing a hefty dose of severe weather and drought relief with them. Mother Nature put an exclamation point on the tumultuous weather on August 26. A stifling day with temperatures in the 100s saw the heat index soar as high as 118 degrees before severe storms – including an EF-1 tornado – blasted the state later that evening.