Oklahomans have grown accustomed to the fickle weather of the Great Plains, particularly during the transitional months of spring and fall. Many state residents have left the house dressed for a pleasantly warm autumn day, only to be caught unawares by the icy chill of an arctic blast. With experience comes wisdom, however, and Oklahomans have learned to keep a trained eye on the weather forecasts. Imagine the surprise of the state's burgeoning population on November 11, 1911, when weather forecasts were mostly limited to observations passed down the telegraph line, as they witnessed one of the most abrupt temperature swings in the state's 102-year history. On that afternoon, Oklahoma City reached a record high temperature of 83 degrees. Soon thereafter, a "norther" barreled through the state, dropping temperatures 50-65 degrees in the span of a few hours. By midnight, the temperature at Oklahoma City had plunged to a frigid 17 degrees, the record low for that same date. Both records still stand, marking November 11th, 1911, as the only date in state history in which the record high and low temperatures were broken on the same day for a single location. National Weather Service forecasts indicate the milestones will be safe for yet another year. The high temperature for Oklahoma City on the 11th should hover near 65 degrees, and the low is expected to remain in the upper 40s.