From November 2014 to December 21, 2014, the monthly temperature continued to fall in all observed North American cities due to seasonality. Data from AccuWeather shows Chicago, New York, and San Diego felt colder by 0.17, 5, and 1.76 degrees Celsius (C), respectively, when compared to the previous month. On the other hand, San Antonio was 2.28 degrees Celsius (C) warmer. In first three weeks of December 2014, the average monthly temperatures in the observed North American cities were as follows: San Antonio (15C), Chicago (-4C), New York (1C), and San Diego (17C).
In December 2014, the two-year average in Chicago, New York, and San Antonio was lower, while San Diego felt warmer. When comparing the past two-year average of December temperatures, this year’s December felt warmer in Chicago, San Antonio, and San Diego by 0.69, 3.32, and 2.39 degrees, respectively. On the other hand, New York was 1.28 degrees below the two-year average. Once more, Chicago experienced the largest weather fluctuations among all the observed cities, as the temperature reached 7C on December 14 and dropped drastically to -15C on December 1.
Data Sources: AccuWeather