Via the Illinois State Climatologist, the NOAA Climate Prediction Center has released the latest outlook for December through February:
First, there are two important notes about the winter forecast. One is that El Niño has not arrived yet, and if it does, it is expected to be mild.
The other point is that the current conditions are not always a reliable predictor of future conditions. In other words, just because we are having a cold November (9 degrees below average), that does not doom us to another cold winter. To give a recent example, November of 2012 was 1.3 degrees below average, while the following winter of 2012-13 was 3.0 degrees above average.
The first panel shows the temperature odds for December-February, our core winter months. Southern Illinois has a slightly elevated chance of colder-than-average temperatures as does most of the southern states. There is a stronger chance that temperatures will be above-average on the West Coast and Alaska.
The El Niño was earlier forecast to be slightly stronger than the current forecast has it, which is disappointing. We're still experiencing frigid temperatures here, and it's not even December yet. El Niño can mitigate the cold in Chicago if it's strong enough. Now it looks like we're going to have the usual amount of chill. Fie.