alt Hacker NewsI'd sneak in 'Toggle C/F' somewhere and hook it to the same function you use on the numbers.
Fahrenheit goes negative at a measly -18C. Where I live -20 to -30C is not uncommon. Whether it's 17.5 or 18C typically does not matter, continual changes in wind and other factors will for pretty much all practical purposes quench that difference.
Fair enough. I added a toggle button and removed decimal °C.
Weather uncertainty may make that extra precision less useful.