The OID for the CPU utilization in percent(%)is:
1.3.6.1.4.1.11.2.14.11.5.1.9.6.1
For the temperature stuff look in the hpicfSensorTable starting at OID:
1.3.6.1.4.1.11.2.14.11.1.2.6
best to do a walkmib 1.3.6.1.4.1.11.2.14.11.1.2.6 on the switch itself.