It was 13°C yesterday, but the temperature changed by -18.6° overnight. What is the temperature now?

To find the current temperature, we need to subtract the change in temperature from yesterday's temperature.

13°C - 18.6°C = -5.6°C

Therefore, the temperature now is -5.6°C.

To find the current temperature, we need to subtract the change in temperature from the temperature yesterday.

The temperature yesterday was 13°C, and the change in temperature overnight was -18.6°C.

So, the current temperature can be calculated as:
13°C - 18.6°C = -5.6°C

Therefore, the current temperature is -5.6°C.