Q:

Highcharts: Stop one series interacting with the mouse?

Is it possible to have one series not interact with the mouse? (e.g. not affect tool tips, marker hovers etc). FOr instance If I want to show average temperature visually, but I want to keep my design simple and not include just the average temperature in my tooltip (Easy), and I want to stop its shape triggering the tooptip (I don't know how to do this)

A:

Try setting the enableMouseTracking property on the plotOptions to false. 
You can set it both on each separate plot type like this (in this case a line plot):
plotOptions: {
            line: {
                enableMouseTracking: false
            }
        }

Or for all plot types like this:
plotOptions: {
            series: {
                enableMouseTracking: false
            }
        }

