Stop in for a cup of coffee

Is that C.? 2 below Fahrenheit. Damn I wish the US would have used Metrics in my generation. My 20 year old talks Metric all the time. He was taught it more though. Back in the 60's we just touched on the differences. LOL
1976 the gubbernment switched to the metric system.

-19 is cold, and yes, -2f.
-18 is zero, only reason to remember that is gm block heater cords have a sensor, turns on at 0 degrees F.
Chopping off sensor and putting on a proper plug causes an engine code.