On Dec. 24 in New York City, the temperature in Central Park reached a high of 72 degrees, with the rest of the month averaging a high of 56 degrees. I walked around the New York Botanical Garden on Christmas...

Although this year has brought one of the mildest falls in recent memory, the first November snowfall broke a 120-year-old record. Several meteorologists cite a strong El Nino Southern Oscillation as...