Hi Saeed,
I am not an expert on the Opmanager but still the below is what I found.
This is the OID which gives Cisco temperature(.1.3.6.1.4.1.9.9.13.1.3.1.3.1). Not all catalyst devices support this.
It is inside CISCO-ENVMON-MIB. Please load that mib and check if your device is responding in mibbrowser.bat which is under /OpManager/bin
Please rate the helpfull posts.
Regards,
Naidu.