526
metric rule
(lemmy.ml)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
I see what you mean, but the freezing point of water is arguably the most critical temperature when it comes to weather. Celsius is easy in this regard.
+3°C? => Precipitation will almost certainly be liquid.
-3°C? => Precipitation will be mostly solid and any possible rain or drizzle will be supercooled, forming a sheet of ice on whatever it lands on. Look out for slippery roads!