24 degrees

I'm learning to understand Celsius. Although my job involves math I don't think anyone (other than mathematicians) likes walking around and doing formulas like [F=C*(9/5)+32] in their head. So I've relied on key benchmarks between Celsius and Fahrenheit to help me.

0 Celsius = 32 Fahrenheit
10 Celsius = 50 Fahrenheit
20 Celsius = 68 Fahrenheit
30 Celsius = 86 Fahrenheit

Therefore...anything less than 10 is coat weather, under 5 is hat and glove weather. The closer it gets to 20 the happier I am and over 30 I really wish they had air conditioning in London. Today is sunny and 24. I like 24 (75).