For Illinois and Missouri, the northwestern half of both states are in an area that has a slightly elevated chance of above normal temperatures. For precipitation, the southeastern one-third of both states have a slightly elevated chance of drier than normal precipitation.To sum up: it could be wet, dry, hot, or cold. Way to hedge your bets there Jim.
"El Nino winters in Illinois and Missouri tend to be, for lack of a better word, rather bland, " says Jim Kramper, Warning Coordination Meteorologist for the National Weather Service in St. Louis, MO. "We tend to not have a lot of big events. From what we have looked at there is a tendency to be a bit warmer and drier than normal, but it has gone both ways."
"While we may expect conditions to be a bit warmer and drier than normal, there will still be snow and ice events," added Kramper. "There is always a degree of uncertainty involved in seasonal predictions, so it is best to prepare for winter as usual."