Tempature types and colours

[flamingGalah!]

45 to 50C: Lethal heat

40 to 45C: Scorching hot

35 to 40C: Very hot

31 to 35C: Hot

26 to 30C: Very Warm

21 to 25C: Warm

16 to 20C: Mild

11 to 15C: Cool

6 to 10C: Cold

1 to 5C: Very Cold

-5 to 0C: Freezing Cold

< -5C: Brutal Cold

[Caleb Yeung]

Sorry if you thought that the example scale was my real preference, it wasn't carefully made, just an 'example scale'...

Here is my real preference...remember that these are shade temperatures - lower 10 F for sunny conditions.

> 125 F: Lethal heat

115 - 125 F: Scorching Hot

105 - 115 F: Extremely Hot

95 - 105 F: Very Hot

85 - 95 F: Hot

75 - 85 F: Warm

60 - 75 F: Mild

45 - 60 F: Cool

30 - 45 F: Chilly

5 - 30 F: Cold

-20 - 5 F: Very Cold

-45 - -20 F: Extremely Cold

-70 - -45 F: Frigid Cold

< -70 F: Brutal Cold

*Below -20 F or above 105 F without special protection can potentially be dangerous

[Jas182]

Above 40ºC - extremely hot
38-40ºC - very hot
33-37ºC - hot
28-32ºC - very warm
21-27ºC - warm
19-21ºC - Mild
16-18ºC - Cool
13-15ºC - Very cool
11- 12ºC Chilly
6-9ºC Quite cold
3-5ºC - Cold
0-2ºC - Very cold
Below 0c - Freezing

[Donar]

I like the color sequence just like in the visible spectrum:

[PrarieCanadian]

We have just had a week below -20C (some days below -30 and wind chills below -40) so 0C would seem warm right now... (And likely many would be out in t-shirts, possibly even shorts)...
It is all relative
You really know it is cold when you can throw boiling hot water in the air and it turns to snow instantly!

[Randomguy1234]

-10°C and below Arctic
-10 to -0°C Freezing
0-5°C Cold
6-10°C Chilly
11-15°C Mild
16-20°C Warm
21-30°C Hot
31°C and above Scorching

[error-404]

>50ºC - Brutally hot
42-50ºC - Scorching
35-42ºC - Very hot
30-35ºC - Hot
25-30ºC - Warm
20-25ºC - Mildly warm
15-20ºC - Neutral (above average for where I live, but I'm most likely outside in the daytime)
10-15ºC - Mildly cool
5-10ºC - Cool
0-5ºC - Somewhat cold
-7-0ºC - Cold
-15--7ºC - Very cold
-30--15ºC - Frigid
<-30ºC - Brutally cold

[wawa1992]

115ºF and up - Brutally hot
100ºF - 114ºF - Extremely hot
85ºF - 99ºF - Hot - Prolonged outdoor exposure can be uncomfortable
75ºF - 84ºF - Warm
60ºF - 74ºF - Mild
50ºF - 59ºF - Cool - A brisk, refreshing cool; lower limit of shorts/T-shirt weather
33ºF - 49ºF - Chilly - A hoody may be needed if outdoors prolonged (unless it's sunny)
15ºF - 32ºF - Cold - Classic wintry weather
0ºF - 14ºF - Very cold
-20ºF to -1ºF - Extremely cold
-40ºF to -21ºF - Arctic cold
-80ºF to -41ºF - Antarctic cold
-81ºF or lower - Brutally cold

Temperatures near the boundary of two of these classifications may be an intermediate color, in situations where a wider color palette is available. For instance, a temperature of around 32ºF may be a turquoise color; 58ºF may be a lime green-yellow color; 84ºF may be red-orange; and 98ºF a burgundy color.