How hot is it?

If you want to know how hot the weather is today you can use a thermometer. A thermometer is an instrument that measures the temperature.

It looks like this:

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Do you recognise it? Doctors use thermometers to measure the temperature of their patients.

If you look at a thermometer you will see this sign °C. This stands for degrees Celsius.

The hotter the weather is, the more degrees Celsius will show up on the thermometer.

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When the temperature is below 0 degrees Celsius (°C), it is very cold. There can be ice and snow. Temperatures below zero are shown with a negative number. For example, -20°C means it is 20 degrees below zero.