CPU temp applet for the XFCE panel.

[Moltke]

OP wanted something in the taskbar to have it always visible.

[member=7109]Moltke[/member]
The way I described installation, it IS in the taskbar   See here :
https://imgur.com/a/n9M6K

Tell me if imgur link works or not,  first time upload there. Woot!

-Cheers!

Yes, I installed it from the install/remove software app, went to panel preferences but like I said, it shows a window on the desktop which displays the info, not exactly what I was looking for. However, I tried your way with same result but gkrellm is doing the job; I can see the info in a little window which stays always on top, check it here https://imgur.com/a/meItl   and this is how the xfce4-sensors-plugin looks like https://imgur.com/a/pxawj as you can see is a big window which I have to open every time if checking temps. should I mark this thread as solved? By the way, imgur link works fine.