this post was submitted on 31 Mar 2024
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What's so special about the 0 - 100 range? For either system, there's temperatures that have significance.
-20 C is getting dangerously cold (wear all winter gear available if you must be outside for anything longer than brief durations).
-10 C is very cold (winter coat, gloves, hat).
0 C is freezing (winter coat necessary, gloves and hat optional).
10 C is chilly (winter coat unzipped, or jacket and sweater).
20 C is comfortable (t-shirt and pants).
22 C is about room temperature (shorts become viable above this).
30 C is hot (nude comfortable; minimize clothing).
40 C is getting dangerously hot (depending on humidity and personal heat tolerance) (clothing that protects from heat might be more desirable than minimising clothing).
F has finer whole number resolution for temperatures typically experienced by humans. Obviously C can be represented by decimals, but I tend to think whole numbers are clearer.
Personally I use C and metric for all my scientific work and F for representing outside temperature.
Edit: Phrasing
I honestly can't say I need resolution finer than Celsius for air temperature. So many other factors have such bigger effects on the perceived temperature (humidity, UV index, if the sun is shining, wind speed, etc) that a granularity of 1°F doesn't make sense to me.
Pool temperature, on the other hand, yeah, 1°F or 0.5°C resolution is perceptible.
I responded a few posts higher with more detail about this, but after teaching myself Celsius I actually prefer the lower resolution. A change of degree Celsius has more meaning than a change of degree Fahrenheit. (Also many, though not all, weather sources are using the Celsius values anyway and then converting and rounding them to Fahrenheit, so you don’t really get the benefit of that granularity.)