Interface mappings: 1.3.6.1.2.1.47.1.1.1.1.2
Actual temperatures: 1.3.6.1.4.1.9.9.91.1.1.1.1.4

Find the interface you want to get the temp for

snmpwalk -v 2c -c community server.web-ster.com .1.3.6.1.2.1.47.1.1.1.1.2

Map that number to the SNMP oid for it

snmpwalk -v 2c -c community server.web-ster.com .1.3.6.1.4.1.9.9.91.1.1.1.1.4