Good news: It appears likely that Cape Girardeau will have a White Christmas with some snow on the ground Christmas morning.
Bad news: It won't be a big snowstorm. We'll probably only get 1-3 inches, which won't be enough to provide an excuse to avoid Christmas dinner at your in-laws.
The computer models are generally agreeing that a weak storm will roll through from the northwest, providing good chances for snow starting Friday and lasting through Christmas morning. Flurries could continue through the rest of the holiday weekend.
Here is the official forecast from the National Weather Service:
FRIDAY...CLOUDY. A CHANCE OF SNOW IN THE MORNING THEN SNOW LIKELY IN THE AFTERNOON. MINOR SNOW ACCUMULATIONS. HIGHS IN THE LOWER 30S. EAST WINDS 5 TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
FRIDAY NIGHT: SNOW LIKELY. MINOR SNOW ACCUMULATIONS. LOWS IN THE UPPER 20S. NORTHEAST WINDS 5 TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
CHRISTMAS DAY: MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF LIGHT SNOW. HIGHS IN THE UPPER 20S.
SATURDAY NIGHT: MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF LIGHT SNOW. LOWS AROUND 19.
SUNDAY: MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF LIGHT SNOW. HIGHS IN THE MID 20S.
SUNDAY NIGHT: MOSTLY CLOUDY. A CHANCE OF FLURRIES. LOWS AROUND 18.
How much will we get? The GFS model delivers widespread 2+ inch snowfalls from Cape northward:
The NAM model is slightly more bullish, painting 2-4 inches over most of Southeast Missouri:
There is always a chance that we won't see anything at all. That's what the Scrooge, er... I mean, ECMWF model suggests. Bah humbug!
Given this information, the Sorta Reliable Wild Guess Dartboard System has produced this forecast: