The temperature on any given summer day may be in the 80s or 90s ... The National Weather Service describes the heat index using the time-worn saying, "It's not the heat, it's the humidity." ...

In the last five years, average summer temperatures in 13 of the 16 cities looked at were at least 1ºC higher than during the first five years of the 1970s. The pdf contains the summer temperature ...

To understand what a time graph is showing you, you need to look at three things: 1. Title - The title tells you what the graph is about. For example, "Temperature on the First of September." ...

A line graph could be used to show the changes in a country's employment structure over time. This graph shows ... there are two y-axes to show average temperature and total rainfall.

There have been record temperatures every day for more than a year ... What’s different now, compared with this time last year, is that the planet is dealing with the effects of an El Niño ...