This climatogram shows how the Shrub-lands are overall pretty consistent in their temperature and that it heats up and becomes a little dry in the summer time.
This Climatogram shows how the climate in this particular shrub-land, located in San Diego, does not have a very diverse climate with summers being a little dry with a temperature of 60-85 degrees typically, and mild winters with temperature ranging typically from 40-65 degrees with a little bit of rain.
To explain the Climatogram further take a look at the red line segments. The red lines follow the progression from one month to the next and explain a slight and not drastic change in climate from mid fifties to the low eighties in this particular climatogram. The green bar graph shows the amount of rain fall. Take a quick look at the moths of July and August. As you can see its almost negligible, explaining the fact that the Chaparral doesn't get any rain in the summer and ultimately not much rain overall as the highs represented as January-March in the graph only show some 2 inches on average.