Converting Celsius to Farenheit

Having lived here a long time, I still have never found a quick or easy way. Anything between 25 and 30 is warm to hot, over 30 is really hot. O is of course cold, anything between 10 and 20 is jacket weather. Ha, that doesn't help you much, but I am sure some one will have a good idea for you.

The old "division formula" is the only accurate method. There are a few quick methods, but they require memorization.

Zero Celsius is 32 Fahrenheit. Anything below that is "very cold". (-40 is the same in either system).

20° Celsius is "room temp", 68° F.

Rick's favorite memory aid is 28° C is 82° F.

Always remember that 0°C is 32°F
After that, add 18°F for every 10°C

So, 0°C is freezing
10°C is a cool day, 50°F
20°C is room temp, 68°F
30°C is a warm summer day, 86°F
40°C is a hot day, 104°F

Multiply the Celsius figure by 2 and add 30 and you will be as close as you need to be.

15 X 2 = 30 + 30 = 60

Lee, I would have to qualify 40C as more than just a hot day. More like "absurdly hot". :-)

I do what Norma does. Double the Celcius and add 30. That will give you a number within a few degrees of the actual.

40 is a super hot, really uncomfortable day. 5 years ago we had a 3 week period in Europe with 40+ temps and people were dying like flies. Personally, anything over 30 I find to be leaning towards miserable, it is getting in the 90's there. Add some humidity, hot city streets and no shade, and your day is less than fun.

Jo, as they say, it's not the heat, it's the humididy. I used to live in Penn. and there, with very high humidity, 85-90°F is really uncomfortble. Here in Denver with dry air, 85-90° is rather pleasant. I think Germany, for instance, is more like Penn. I was there in Aug 2002 and it was just over 30°C, but the humidity made it almost unbearable.

I was taught the following: Thirty is hot, twenty is nice, ten is chilly, zero is ice... Ciao. George

I almost skipped this thread as I had nothing to add to the subject but it turned out to be a valuable learning tool. Thanks to all!