I had to fix my car when the temperature is at -20 Celsius

[Jit833]

1) I had to fix my car when the temperature is at -20 Celcious.
2) I had to fix my car in -20 Celcious.
3) I had to fix my car when the temperature was very low.

Are the above sentences correct? Please advice.

 

[probus]

1) I had to fix my car when the temperature was -20 Celcious.

2) I had to fix my car in -20 Celcious. Celcius, not Celcious. It is named after its inventor.

3) I had to fix my car when the temperature was very low. Grammatically perfect but much less specific.

Are the above sentences correct? Please advice.

You must use the verb advise instead of the noun advice.

 

[riquecohen]

Usually spelled Celsius in the US.

 

[emsr2d2]

You have been given the spelling and grammatical corrections. However, the sentence itself is rather strange. Was it a coincidence that it was -20 degrees outside on the day your car broke down? Did you car break down because it was -20 degrees outside?

 

[probus]

Usually spelled Celsius in the US.

Yes, that was spelling error on my part. Thanks for catching it.