After temperatures mild enough to make the forsythia bloom and the daffodils rise, Chattanooga will face mercury dips into the low 20s for several days.
The low for Sunday night is set to be around 20 degrees.
The sub-freezing weather is due to continue through Thursday morning when a slight warming trend begins.
Here is the latest forecast:
Tonight
Mostly clear, with a low around 20.
North wind 5 to 10 mph.
M.L.King Day
Sunny, with a high near 37. North wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
Increasing clouds, with a low around 23. North wind around 10 mph.
Tuesday
Sunny, with a high near 42. North wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 54.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 41.