From 60° to 40° in about 9 hours

Get READY for a Free Fall.  A Temperature FREE FALL today from 60° to 40° in about 9 hours.  And even COLDER for the Plateau & Smokies.

In summary, expect Mainly gray skies today.  Leftover showers and sprinkles.  Snowflakes for parts of the Smokies and Plateau.  FALLING through the 50s early in the morning and ending the day in the upper 30s to around 40°, thanks to the passage of a cold front.  I call that an "Upside Down" day.
For example, Valley expectation:
7 AM  near 60°
Noon near 45°
4 PM  near 40°
Even COLDER in the Plateau & Smokies

*** The peaks in the Smokies above 3,000 feet could receive 1" or more of snow.

Tonight: 
Decreasing clouds, colder...lows in the mid to upper 20s

Wednesday:
Early fog, sunshiny skies, chilly...highs in the mid-40s
​
Hope this helps you plan
#CaptAccurateWx

https://www.spc.noaa.gov/climo/reports/191216_rpts.html

From the Storm Prediction Center