It's always been in that range when I've been working the system hard . . . The fan and heat-exchanger are clear of any dust/debris.
I Have installed that useful bit of software with the GUI front end
.
Lifetime Min/Max Temperature: 9/71 Celsius
117 2020-05-03 23:00 36 *****************
118 2020-05-03 23:30 49 ******************************
119 2020-05-04 00:00 51 ********************************
120 2020-05-04 00:30 50 *******************************
121 2020-05-04 01:00 49 ******************************
122 2020-05-04 01:30 51 ********************************
123 2020-05-04 02:00 52 *********************************
... ..( 9 skipped). .. *********************************
5 2020-05-04 07:00 52 *********************************
6 2020-05-04 07:30 51 ********************************
... ..( 4 skipped). .. ********************************
11 2020-05-04 10:00 51 ********************************
Apparently this model of laptop has had problems with other people so I am going to check the fan and heat exchanger are clear of any dust/debris.