It's summer, but it's not really hot ... just about 20 degrees Celsius (Centigrade).

I think Canada is the only country where they say "Celsius".

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ESL Expression of the day: "the dog days of summer"

This means that it is very hot.

Some people think that this expression means that dogs go crazy when it's hot;

but other people say that it's because Sirius (the "dog star") is overhead in the night sky.