Interpreting wx radar after color inflation:
green = partly cloudy,
dark green = cloudy,
yellow = virga,
orange = sprinkles,
red = moderate sprinkles,
purple = light rain,
blinking dark purple = rain,
radar inoperative = rain, sometimes moderate
Come out, Virginia, don't let me wait
You snow-holic girls start much too late
Aw, but sooner or later, it comes down to fate
This might as well be the one
You must be new here, Kay. The rules here require rooting for the imby jack, then suicide when, surprise, that does not happen. Lather rinse repeat.
I'll be happy if the rest of the month features interesting weather, but I'm just a renegade rules breaker.
If this temp pattern is anything but random, I would speculate it is related to the winter solstice. Minimum northern sunshine happens mid-late December. Perhaps the small increase in heating that occur in January is enough to instigate artic cold draining to the lower latutudes at a certain time, with the result DC sees unusually cold temps Jan 20 or so.