Oklahoma became a weather battleground state during January. A large upper-level ridge of high pressure entrenched over the western United States battled a deep trough of low pressure to the east for supremacy over the state’s weather.
Long-Term Average Graphs, by Al Sutherland; Mesonet in Pictures Long-Term Averages Graphs Customizable Options; July 2011 - Hottest Month in U.S. History; Long-Term Average Maps, by Stephanie Bowen; June Weather Follows script, by Gary McManus
It had been awhile since Oklahoma has seen a month like October. Eleven months, to be exact. Not since September 2011 had Oklahoma seen a month where the statewide average temperature finished on the cold side of normal.