The Climate Prediction Center of the NWS has released their latest forecast for January and for the series of 3-month periods starting with January-March. The forecast for January (first map, top panels) in Illinois is non-committal with “equal chances” of above, below, and near-normal temperature and precipitation across the state. We are sandwiched between wetter than normal areas to the north and south of us.
The forecast is a little more interesting for the 3-month period starting in January (first map, bottom panels) with much of the southern two-thirds of Illinois in an increased chance of above normal precipitation. Far southern Illinois has an increased chance of above normal temperatures.
The seasonal temperature forecast for April-June (second map) shows an increased chance of above-normal temperatures across Illinois and much of the US. Their seasonal precipitation forecast for April-June (not shown) calls for equal chances of above, below, and near-normal precipitation. The seasonal temperature and precipitation forecast for July-September are non-committal with equal chances of above, below, and near-normal conditions during that period.
The seasonal forecast for drought shows expected improvement in drought in northern Illinois (third map). They expect drought to continue in western Illinois with only limited improvement in the next three months. They expect drought to continue to the west of Illinois with limited improvements in parts of Missouri, Iowa, and Minnesota.
You can see all the Climate Prediction Center forecasts on their website: http://www.cpc.ncep.noaa.gov/