Just think about it by 10s, as you do with the metric system:
20 C - a bit less than room temperature (68 F)
30 C - pretty hot (86 F)
40 C - very hot (104 F)
And going the other way:
10 C - a bit chilly (50 F)
0 C - cold (32 F)
-10 C - real cold (14 F)
-20 C - really really cold (-4 F)
When you hear a temperature in Celsius, don't try to convert it to Fahrenheit, just think in Celsius. 15 degrees is halfway between "chilly" 10 C and "room temp" 20 C. One degree of warming - say 26 C to 27 C - is pretty easy to conceptualize when you have those 10-degree reference points.
This is the right answer for Americans. The reason I prefer Fahrenheit is because it is the one I know what degrees feel like and because Celsius isn’t reported in enough resolution.
If it was always reported to the half point I think we would be able to relate to Celsius better. And if I was making a population wide change I’d ensure reporting was always to the half degree.
I think I meant less for forecasts and more for weather apps and thermostats. I really think it could help with adoption. But if it’s not warranted by the error then maybe I’ll reconsider.
20 C - a bit less than room temperature (68 F)
30 C - pretty hot (86 F)
40 C - very hot (104 F)
And going the other way:
10 C - a bit chilly (50 F)
0 C - cold (32 F)
-10 C - real cold (14 F)
-20 C - really really cold (-4 F)
When you hear a temperature in Celsius, don't try to convert it to Fahrenheit, just think in Celsius. 15 degrees is halfway between "chilly" 10 C and "room temp" 20 C. One degree of warming - say 26 C to 27 C - is pretty easy to conceptualize when you have those 10-degree reference points.