December was unusually warm across all of Oklahoma, and uncommonly wet across the northwestern third. A prolonged absence of Arctic air led to the state’s fourth warmest December since records began in 1895, and contributed to 2023’s rank as the 10th warmest calendar year. The month continued a string of Decembers with above normal temperatures in the last decade. The Decembers of 2019 and 2015 ranked as the 13th and sixth warmest across the state, respectively.
December provided a fitting end to Oklahoma’s tumultuous 2022 weather story. This final chapter came complete with a half-dozen tornadoes, the coldest December day in 32 years, and the finishing touches on an all-time Oklahoma rainfall record. The Oklahoma Mesonet site at Goodwell finished 2022 with 6.48 inches of rain, breaking the previous all-time lowest annual rainfall record for any location in Oklahoma of 6.53 inches from Regnier in 1956. Those data go back to the late 1880s.
In what could best be described as a climatological anomaly on steroids, Oklahoma soared to its warmest December on record, besting the previous mark by more than 5 degrees. It was a remarkable display of muscle by Mother Nature that saw the statewide average temperature finish more than 10 degrees above normal as measured by the Oklahoma Mesonet. For some perspective, the next nine warmest Decembers all reside within 2 degrees of each other. No other calendar month in Oklahoma has such a large spread between the top two marks. May has the next largest difference at 1.2 degrees.
A powerful winter storm pounded the state on 2020’s final day, a fitting epitaph to a tumultuous year—and a wintry December. The storm lasted into the first morning of 2021 and brought widespread totals of 2-6 inches of snow from southwestern into northeastern Oklahoma. Localized areas in central Oklahoma reported up to 10 inches of snow. The storm was the last in a series of four impactful winter systems that struck the state during December, and the fifth of the season. The month’s first storm dumped 10-15 inches of snow in far northwestern Oklahoma between Dec. 2-3.
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.
Three soaking storm systems brought much needed precipitation to the state, ending a run of up to 78 days without significant moisture for much of northern and western Oklahoma. Like last year at this time, the winter wheat crop was clamoring for a good drink of water, and fire danger was increasing with each dry, windy day. Between the three storms, virtually all areas of the state saw relief by the end of the month. The most significant storm struck just after Christmas Day and dumped 1-3 inches of rain across a good portion of the state.
Oklahoma’s seemingly endless supply of mild weather came to an abrupt halt during the third week of December, ushering in a frigid end to a warm 2017. A bulge in the jet stream allowed frosty air to plunge southward and place most of the country into an arctic deep freeze. Oklahoma’s introduction to the cold air came on Dec. 21 and lasted through the end of the year. Highs in the 60s and even a few 70s were common during the first three weeks of December, topped by a high of 83 degrees at three Mesonet sites in southwest Oklahoma on the fourth.
December was a cold month for many Oklahomans, a dry month for most, and a memorable one for all. Normally, snow would be the big news during the first month of winter, but drought intensification, one of the more memorable cold snaps in recent memory, and one of the warmest Christmas Days on record captured the headlines this year. According to preliminary data from the Oklahoma Mesonet, the statewide average temperature was 38.4 degrees, 0.5 degrees below normal and the 50th coolest December since records began in 1895.
Winter was noticeably absent through much of December, a deceptively warm month that ended more than 2 degrees above normal to rank as the 38th warmest since records began in 1895. The season finally lived up to its name during the month's final week, however, with a swath of 3-5 inches of snow along the I-44 corridor in southwestern Oklahoma, along with another icy plunge to ring in the New Year. New Year's Eve was celebrated with patches of freezing drizzle, snow, sleet and below-zero wind chills.
A frigid and sometimes icy December seemed a fitting way to close out the boisterous weather of 2013. Preliminary data from the Oklahoma Mesonet ranked the month as the 17th coolest December on record at nearly 4 degrees below normal. Records of this type for Oklahoma date back to 1895. The statewide average temperature as recorded by the Mesonet was 35.2 degrees. As chilly as it seemed, however, that mark provided little threat to 1983's record cold of 25.8 degrees, but also far cooler than 2012's 42.1 degrees.